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