`sig
type buf
val create : int -> CamomileLibrary.UNF.Type.NFCBuf.buf
val contents :
CamomileLibrary.UNF.Type.NFCBuf.buf -> CamomileLibrary.UNF.Type.text
val clear : CamomileLibrary.UNF.Type.NFCBuf.buf -> unit
val reset : CamomileLibrary.UNF.Type.NFCBuf.buf -> unit
val add_char :
CamomileLibrary.UNF.Type.NFCBuf.buf -> CamomileLibrary.UChar.t -> unit
val add_string :
CamomileLibrary.UNF.Type.NFCBuf.buf ->
CamomileLibrary.UNF.Type.text -> unit
val add_buffer :
CamomileLibrary.UNF.Type.NFCBuf.buf ->
CamomileLibrary.UNF.Type.NFCBuf.buf -> unit
end`