question: return the sequence number of the payload . concode_field_sep long sequence concode_elem_sep ByteBuffer data concode_elem_sep String SEQ_HEADER concode_elem_sep char[] HEX_CHARS concode_elem_sep Log logger concode_elem_sep int BUFFER_SIZE concode_field_sep void writeTo concode_elem_sep void logOutgoing concode_elem_sep void logIncoming concode_elem_sep String toHexString concode_elem_sep void log concode_elem_sep HttpTunnelPayload get concode_elem_sep ByteBuffer getPayloadData concode_elem_sep void assignTo
target: long function ( ) { return this . sequence ; }