<?xml version='1.0' encoding='utf-8'?>
<?grc format='1' created='3.7.10'?>
<flow_graph>
  <timestamp>Sun Apr 10 12:10:29 2016</timestamp>
  <block>
    <key>options</key>
    <param>
      <key>author</key>
      <value></value>
    </param>
    <param>
      <key>window_size</key>
      <value></value>
    </param>
    <param>
      <key>category</key>
      <value>Custom</value>
    </param>
    <param>
      <key>comment</key>
      <value></value>
    </param>
    <param>
      <key>description</key>
      <value></value>
    </param>
    <param>
      <key>_enabled</key>
      <value>True</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(8, 13)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
    <param>
      <key>generate_options</key>
      <value>no_gui</value>
    </param>
    <param>
      <key>hier_block_src_path</key>
      <value>.:</value>
    </param>
    <param>
      <key>id</key>
      <value>formatter_ofdm</value>
    </param>
    <param>
      <key>max_nouts</key>
      <value>0</value>
    </param>
    <param>
      <key>qt_qss_theme</key>
      <value></value>
    </param>
    <param>
      <key>realtime_scheduling</key>
      <value></value>
    </param>
    <param>
      <key>run_command</key>
      <value>{python} -u {filename}</value>
    </param>
    <param>
      <key>run_options</key>
      <value>prompt</value>
    </param>
    <param>
      <key>run</key>
      <value>True</value>
    </param>
    <param>
      <key>thread_safe_setters</key>
      <value></value>
    </param>
    <param>
      <key>title</key>
      <value></value>
    </param>
  </block>
  <block>
    <key>variable</key>
    <param>
      <key>comment</key>
      <value></value>
    </param>
    <param>
      <key>_enabled</key>
      <value>1</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(584, 13)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
    <param>
      <key>id</key>
      <value>frame_key</value>
    </param>
    <param>
      <key>value</key>
      <value>"frame_len"</value>
    </param>
  </block>
  <block>
    <key>variable</key>
    <param>
      <key>comment</key>
      <value></value>
    </param>
    <param>
      <key>_enabled</key>
      <value>1</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(168, 13)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
    <param>
      <key>id</key>
      <value>hdr_format</value>
    </param>
    <param>
      <key>value</key>
      <value>digital.header_format_ofdm(occupied_carriers, 1, len_key, frame_key, num_key, header_mod.bits_per_symbol(), payload_mod.bits_per_symbol(), scramble)</value>
    </param>
  </block>
  <block>
    <key>variable</key>
    <param>
      <key>comment</key>
      <value>Need another for this path
as the formatters keep state.</value>
    </param>
    <param>
      <key>_enabled</key>
      <value>1</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(296, 477)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
    <param>
      <key>id</key>
      <value>hdr_format_bb</value>
    </param>
    <param>
      <key>value</key>
      <value>digital.header_format_ofdm(occupied_carriers, 1, len_key, frame_key, num_key, header_mod.bits_per_symbol(), payload_mod.bits_per_symbol(), scramble)</value>
    </param>
  </block>
  <block>
    <key>variable_constellation_rect</key>
    <param>
      <key>comment</key>
      <value></value>
    </param>
    <param>
      <key>const_points</key>
      <value>[1, -1]</value>
    </param>
    <param>
      <key>_enabled</key>
      <value>True</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(944, 11)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
    <param>
      <key>id</key>
      <value>header_mod</value>
    </param>
    <param>
      <key>imag_sect</key>
      <value>2</value>
    </param>
    <param>
      <key>real_sect</key>
      <value>2</value>
    </param>
    <param>
      <key>rot_sym</key>
      <value>2</value>
    </param>
    <param>
      <key>soft_dec_lut</key>
      <value>None</value>
    </param>
    <param>
      <key>precision</key>
      <value>8</value>
    </param>
    <param>
      <key>sym_map</key>
      <value>[0, 1]</value>
    </param>
    <param>
      <key>w_imag_sect</key>
      <value>1</value>
    </param>
    <param>
      <key>w_real_sect</key>
      <value>1</value>
    </param>
  </block>
  <block>
    <key>variable</key>
    <param>
      <key>comment</key>
      <value></value>
    </param>
    <param>
      <key>_enabled</key>
      <value>1</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(352, 13)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
    <param>
      <key>id</key>
      <value>len_key</value>
    </param>
    <param>
      <key>value</key>
      <value>"packet_len"</value>
    </param>
  </block>
  <block>
    <key>variable</key>
    <param>
      <key>comment</key>
      <value></value>
    </param>
    <param>
      <key>_enabled</key>
      <value>1</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(464, 13)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
    <param>
      <key>id</key>
      <value>num_key</value>
    </param>
    <param>
      <key>value</key>
      <value>"packet_num"</value>
    </param>
  </block>
  <block>
    <key>variable</key>
    <param>
      <key>comment</key>
      <value></value>
    </param>
    <param>
      <key>_enabled</key>
      <value>True</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(784, 13)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
    <param>
      <key>id</key>
      <value>occupied_carriers</value>
    </param>
    <param>
      <key>value</key>
      <value>(range(-26, -21) + range(-20, -7) + range(-6, 0) + range(1, 7) + range(8, 21) + range(22, 27),)</value>
    </param>
  </block>
  <block>
    <key>variable_constellation_rect</key>
    <param>
      <key>comment</key>
      <value></value>
    </param>
    <param>
      <key>const_points</key>
      <value>[-1-1j, -1+1j, 1+1j, 1-1j]</value>
    </param>
    <param>
      <key>_enabled</key>
      <value>True</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(1128, 11)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
    <param>
      <key>id</key>
      <value>payload_mod</value>
    </param>
    <param>
      <key>imag_sect</key>
      <value>2</value>
    </param>
    <param>
      <key>real_sect</key>
      <value>2</value>
    </param>
    <param>
      <key>rot_sym</key>
      <value>4</value>
    </param>
    <param>
      <key>soft_dec_lut</key>
      <value>None</value>
    </param>
    <param>
      <key>precision</key>
      <value>8</value>
    </param>
    <param>
      <key>sym_map</key>
      <value>[0, 1, 3, 2]</value>
    </param>
    <param>
      <key>w_imag_sect</key>
      <value>1</value>
    </param>
    <param>
      <key>w_real_sect</key>
      <value>1</value>
    </param>
  </block>
  <block>
    <key>variable</key>
    <param>
      <key>comment</key>
      <value></value>
    </param>
    <param>
      <key>_enabled</key>
      <value>1</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(696, 13)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
    <param>
      <key>id</key>
      <value>scramble</value>
    </param>
    <param>
      <key>value</key>
      <value>False</value>
    </param>
  </block>
  <block>
    <key>blocks_message_debug</key>
    <param>
      <key>alias</key>
      <value></value>
    </param>
    <param>
      <key>comment</key>
      <value></value>
    </param>
    <param>
      <key>affinity</key>
      <value></value>
    </param>
    <param>
      <key>_enabled</key>
      <value>0</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(952, 225)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
    <param>
      <key>id</key>
      <value>blocks_message_debug_0</value>
    </param>
  </block>
  <block>
    <key>blocks_message_debug</key>
    <param>
      <key>alias</key>
      <value></value>
    </param>
    <param>
      <key>comment</key>
      <value></value>
    </param>
    <param>
      <key>affinity</key>
      <value></value>
    </param>
    <param>
      <key>_enabled</key>
      <value>1</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(760, 105)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
    <param>
      <key>id</key>
      <value>blocks_message_debug_0_0</value>
    </param>
  </block>
  <block>
    <key>blocks_message_debug</key>
    <param>
      <key>alias</key>
      <value></value>
    </param>
    <param>
      <key>comment</key>
      <value></value>
    </param>
    <param>
      <key>affinity</key>
      <value></value>
    </param>
    <param>
      <key>_enabled</key>
      <value>1</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(992, 425)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
    <param>
      <key>id</key>
      <value>blocks_message_debug_0_0_0</value>
    </param>
  </block>
  <block>
    <key>blocks_message_strobe</key>
    <param>
      <key>alias</key>
      <value></value>
    </param>
    <param>
      <key>comment</key>
      <value></value>
    </param>
    <param>
      <key>affinity</key>
      <value></value>
    </param>
    <param>
      <key>_enabled</key>
      <value>True</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(24, 293)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
    <param>
      <key>id</key>
      <value>blocks_message_strobe_0</value>
    </param>
    <param>
      <key>maxoutbuf</key>
      <value>0</value>
    </param>
    <param>
      <key>msg</key>
      <value>pmt.PMT_T</value>
    </param>
    <param>
      <key>minoutbuf</key>
      <value>0</value>
    </param>
    <param>
      <key>period</key>
      <value>2000</value>
    </param>
  </block>
  <block>
    <key>blocks_pdu_to_tagged_stream</key>
    <param>
      <key>alias</key>
      <value></value>
    </param>
    <param>
      <key>comment</key>
      <value></value>
    </param>
    <param>
      <key>affinity</key>
      <value></value>
    </param>
    <param>
      <key>_enabled</key>
      <value>1</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(56, 132)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
    <param>
      <key>id</key>
      <value>blocks_pdu_to_tagged_stream_0</value>
    </param>
    <param>
      <key>type</key>
      <value>byte</value>
    </param>
    <param>
      <key>tag</key>
      <value>len_key</value>
    </param>
    <param>
      <key>maxoutbuf</key>
      <value>0</value>
    </param>
    <param>
      <key>minoutbuf</key>
      <value>0</value>
    </param>
  </block>
  <block>
    <key>blocks_pdu_to_tagged_stream</key>
    <param>
      <key>alias</key>
      <value></value>
    </param>
    <param>
      <key>comment</key>
      <value></value>
    </param>
    <param>
      <key>affinity</key>
      <value></value>
    </param>
    <param>
      <key>_enabled</key>
      <value>1</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(64, 420)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
    <param>
      <key>id</key>
      <value>blocks_pdu_to_tagged_stream_0_0</value>
    </param>
    <param>
      <key>type</key>
      <value>byte</value>
    </param>
    <param>
      <key>tag</key>
      <value>len_key</value>
    </param>
    <param>
      <key>maxoutbuf</key>
      <value>0</value>
    </param>
    <param>
      <key>minoutbuf</key>
      <value>0</value>
    </param>
  </block>
  <block>
    <key>blocks_random_pdu</key>
    <param>
      <key>alias</key>
      <value></value>
    </param>
    <param>
      <key>mask</key>
      <value>0xff</value>
    </param>
    <param>
      <key>comment</key>
      <value></value>
    </param>
    <param>
      <key>affinity</key>
      <value></value>
    </param>
    <param>
      <key>_enabled</key>
      <value>True</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(200, 279)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
    <param>
      <key>id</key>
      <value>blocks_random_pdu_0</value>
    </param>
    <param>
      <key>length_modulo</key>
      <value>1</value>
    </param>
    <param>
      <key>maxsize</key>
      <value>50</value>
    </param>
    <param>
      <key>maxoutbuf</key>
      <value>0</value>
    </param>
    <param>
      <key>minsize</key>
      <value>50</value>
    </param>
    <param>
      <key>minoutbuf</key>
      <value>0</value>
    </param>
  </block>
  <block>
    <key>blocks_repack_bits_bb</key>
    <param>
      <key>k</key>
      <value>8</value>
    </param>
    <param>
      <key>l</key>
      <value>1</value>
    </param>
    <param>
      <key>alias</key>
      <value></value>
    </param>
    <param>
      <key>comment</key>
      <value></value>
    </param>
    <param>
      <key>affinity</key>
      <value></value>
    </param>
    <param>
      <key>_enabled</key>
      <value>1</value>
    </param>
    <param>
      <key>endianness</key>
      <value>gr.GR_MSB_FIRST</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(288, 125)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
    <param>
      <key>id</key>
      <value>blocks_repack_bits_bb_0</value>
    </param>
    <param>
      <key>len_tag_key</key>
      <value>len_key</value>
    </param>
    <param>
      <key>maxoutbuf</key>
      <value>0</value>
    </param>
    <param>
      <key>minoutbuf</key>
      <value>0</value>
    </param>
    <param>
      <key>align_output</key>
      <value>False</value>
    </param>
  </block>
  <block>
    <key>blocks_repack_bits_bb</key>
    <param>
      <key>k</key>
      <value>8</value>
    </param>
    <param>
      <key>l</key>
      <value>1</value>
    </param>
    <param>
      <key>alias</key>
      <value></value>
    </param>
    <param>
      <key>comment</key>
      <value></value>
    </param>
    <param>
      <key>affinity</key>
      <value></value>
    </param>
    <param>
      <key>_enabled</key>
      <value>1</value>
    </param>
    <param>
      <key>endianness</key>
      <value>gr.GR_MSB_FIRST</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(544, 413)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
    <param>
      <key>id</key>
      <value>blocks_repack_bits_bb_0_0</value>
    </param>
    <param>
      <key>len_tag_key</key>
      <value>len_key</value>
    </param>
    <param>
      <key>maxoutbuf</key>
      <value>0</value>
    </param>
    <param>
      <key>minoutbuf</key>
      <value>0</value>
    </param>
    <param>
      <key>align_output</key>
      <value>False</value>
    </param>
  </block>
  <block>
    <key>blocks_tag_debug</key>
    <param>
      <key>alias</key>
      <value></value>
    </param>
    <param>
      <key>comment</key>
      <value></value>
    </param>
    <param>
      <key>affinity</key>
      <value></value>
    </param>
    <param>
      <key>display</key>
      <value>True</value>
    </param>
    <param>
      <key>_enabled</key>
      <value>0</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(752, 502)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
    <param>
      <key>id</key>
      <value>blocks_tag_debug_0</value>
    </param>
    <param>
      <key>type</key>
      <value>byte</value>
    </param>
    <param>
      <key>filter</key>
      <value>""</value>
    </param>
    <param>
      <key>name</key>
      <value></value>
    </param>
    <param>
      <key>num_inputs</key>
      <value>1</value>
    </param>
    <param>
      <key>vlen</key>
      <value>1</value>
    </param>
  </block>
  <block>
    <key>digital_crc32_async_bb</key>
    <param>
      <key>alias</key>
      <value></value>
    </param>
    <param>
      <key>comment</key>
      <value></value>
    </param>
    <param>
      <key>affinity</key>
      <value></value>
    </param>
    <param>
      <key>_enabled</key>
      <value>True</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(424, 300)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
    <param>
      <key>id</key>
      <value>digital_crc32_async_bb_1</value>
    </param>
    <param>
      <key>maxoutbuf</key>
      <value>0</value>
    </param>
    <param>
      <key>minoutbuf</key>
      <value>0</value>
    </param>
    <param>
      <key>check</key>
      <value>False</value>
    </param>
  </block>
  <block>
    <key>digital_protocol_formatter_async</key>
    <param>
      <key>alias</key>
      <value></value>
    </param>
    <param>
      <key>comment</key>
      <value></value>
    </param>
    <param>
      <key>affinity</key>
      <value></value>
    </param>
    <param>
      <key>_enabled</key>
      <value>True</value>
    </param>
    <param>
      <key>format</key>
      <value>hdr_format</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(616, 289)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
    <param>
      <key>id</key>
      <value>digital_protocol_formatter_async_0</value>
    </param>
    <param>
      <key>maxoutbuf</key>
      <value>0</value>
    </param>
    <param>
      <key>minoutbuf</key>
      <value>0</value>
    </param>
  </block>
  <block>
    <key>digital_protocol_formatter_bb</key>
    <param>
      <key>alias</key>
      <value></value>
    </param>
    <param>
      <key>comment</key>
      <value></value>
    </param>
    <param>
      <key>affinity</key>
      <value></value>
    </param>
    <param>
      <key>_enabled</key>
      <value>True</value>
    </param>
    <param>
      <key>format</key>
      <value>hdr_format_bb</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(296, 413)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
    <param>
      <key>id</key>
      <value>digital_protocol_formatter_bb_0</value>
    </param>
    <param>
      <key>len_tag_key</key>
      <value>len_key</value>
    </param>
    <param>
      <key>maxoutbuf</key>
      <value>0</value>
    </param>
    <param>
      <key>minoutbuf</key>
      <value>0</value>
    </param>
  </block>
  <block>
    <key>digital_protocol_parser_b</key>
    <param>
      <key>alias</key>
      <value></value>
    </param>
    <param>
      <key>comment</key>
      <value></value>
    </param>
    <param>
      <key>affinity</key>
      <value></value>
    </param>
    <param>
      <key>_enabled</key>
      <value>True</value>
    </param>
    <param>
      <key>format</key>
      <value>hdr_format</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(496, 132)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
    <param>
      <key>id</key>
      <value>digital_protocol_parser_b_0</value>
    </param>
    <param>
      <key>maxoutbuf</key>
      <value>0</value>
    </param>
    <param>
      <key>minoutbuf</key>
      <value>0</value>
    </param>
  </block>
  <block>
    <key>digital_protocol_parser_b</key>
    <param>
      <key>alias</key>
      <value></value>
    </param>
    <param>
      <key>comment</key>
      <value></value>
    </param>
    <param>
      <key>affinity</key>
      <value></value>
    </param>
    <param>
      <key>_enabled</key>
      <value>True</value>
    </param>
    <param>
      <key>format</key>
      <value>hdr_format_bb</value>
    </param>
    <param>
      <key>_coordinate</key>
      <value>(752, 420)</value>
    </param>
    <param>
      <key>_rotation</key>
      <value>0</value>
    </param>
    <param>
      <key>id</key>
      <value>digital_protocol_parser_b_0_0</value>
    </param>
    <param>
      <key>maxoutbuf</key>
      <value>0</value>
    </param>
    <param>
      <key>minoutbuf</key>
      <value>0</value>
    </param>
  </block>
  <connection>
    <source_block_id>blocks_message_strobe_0</source_block_id>
    <sink_block_id>blocks_random_pdu_0</sink_block_id>
    <source_key>strobe</source_key>
    <sink_key>generate</sink_key>
  </connection>
  <connection>
    <source_block_id>blocks_pdu_to_tagged_stream_0</source_block_id>
    <sink_block_id>blocks_repack_bits_bb_0</sink_block_id>
    <source_key>0</source_key>
    <sink_key>0</sink_key>
  </connection>
  <connection>
    <source_block_id>blocks_pdu_to_tagged_stream_0_0</source_block_id>
    <sink_block_id>digital_protocol_formatter_bb_0</sink_block_id>
    <source_key>0</source_key>
    <sink_key>0</sink_key>
  </connection>
  <connection>
    <source_block_id>blocks_random_pdu_0</source_block_id>
    <sink_block_id>digital_crc32_async_bb_1</sink_block_id>
    <source_key>pdus</source_key>
    <sink_key>in</sink_key>
  </connection>
  <connection>
    <source_block_id>blocks_repack_bits_bb_0</source_block_id>
    <sink_block_id>digital_protocol_parser_b_0</sink_block_id>
    <source_key>0</source_key>
    <sink_key>0</sink_key>
  </connection>
  <connection>
    <source_block_id>blocks_repack_bits_bb_0_0</source_block_id>
    <sink_block_id>blocks_tag_debug_0</sink_block_id>
    <source_key>0</source_key>
    <sink_key>0</sink_key>
  </connection>
  <connection>
    <source_block_id>blocks_repack_bits_bb_0_0</source_block_id>
    <sink_block_id>digital_protocol_parser_b_0_0</sink_block_id>
    <source_key>0</source_key>
    <sink_key>0</sink_key>
  </connection>
  <connection>
    <source_block_id>digital_crc32_async_bb_1</source_block_id>
    <sink_block_id>blocks_pdu_to_tagged_stream_0_0</sink_block_id>
    <source_key>out</source_key>
    <sink_key>pdus</sink_key>
  </connection>
  <connection>
    <source_block_id>digital_crc32_async_bb_1</source_block_id>
    <sink_block_id>digital_protocol_formatter_async_0</sink_block_id>
    <source_key>out</source_key>
    <sink_key>in</sink_key>
  </connection>
  <connection>
    <source_block_id>digital_protocol_formatter_async_0</source_block_id>
    <sink_block_id>blocks_message_debug_0</sink_block_id>
    <source_key>header</source_key>
    <sink_key>print_pdu</sink_key>
  </connection>
  <connection>
    <source_block_id>digital_protocol_formatter_async_0</source_block_id>
    <sink_block_id>blocks_pdu_to_tagged_stream_0</sink_block_id>
    <source_key>header</source_key>
    <sink_key>pdus</sink_key>
  </connection>
  <connection>
    <source_block_id>digital_protocol_formatter_bb_0</source_block_id>
    <sink_block_id>blocks_repack_bits_bb_0_0</sink_block_id>
    <source_key>0</source_key>
    <sink_key>0</sink_key>
  </connection>
  <connection>
    <source_block_id>digital_protocol_parser_b_0</source_block_id>
    <sink_block_id>blocks_message_debug_0_0</sink_block_id>
    <source_key>info</source_key>
    <sink_key>print</sink_key>
  </connection>
  <connection>
    <source_block_id>digital_protocol_parser_b_0_0</source_block_id>
    <sink_block_id>blocks_message_debug_0_0_0</sink_block_id>
    <source_key>info</source_key>
    <sink_key>print</sink_key>
  </connection>
</flow_graph>
