question: sets the payload of this message to be the specified byte array . concode_field_sep boolean retained concode_elem_sep boolean dup concode_elem_sep byte[] payload concode_elem_sep int qos concode_elem_sep boolean mutable concode_field_sep void validateQos concode_elem_sep byte[] getPayload concode_elem_sep void clearPayload concode_elem_sep void setQos concode_elem_sep boolean isRetained concode_elem_sep int getQos concode_elem_sep void setDuplicate concode_elem_sep void setMutable concode_elem_sep String toString concode_elem_sep boolean isDuplicate concode_elem_sep void setRetained concode_elem_sep void checkMutable
target: void function ( byte [ ] arg0 ) { checkMutable ( ) ; if ( arg0 == null ) { throw new NullPointerException ( ) ; } this . payload = arg0 ; }