1## message with a 'name' header field and unknown 'unkn' field 2 3## VALID_HEADER includes a LENGTH Header and LENGTH Body 4VALID_HEADER method_call 5REQUIRED_FIELDS 6 7HEADER_FIELD UNKNOWN 8TYPE DICT 9LENGTH Dict 10START_LENGTH Dict 11STRING 'int32' 12TYPE INT32 13INT32 0x12345678 14END_LENGTH Dict 15 16ALIGN 8 17END_LENGTH Header 18START_LENGTH Body 19END_LENGTH Body 20