|  | # | 
|  | # Licensed to the Apache Software Foundation (ASF) under one | 
|  | # or more contributor license agreements. See the NOTICE file | 
|  | # distributed with this work for additional information | 
|  | # regarding copyright ownership. The ASF licenses this file | 
|  | # to you under the Apache License, Version 2.0 (the | 
|  | # "License"); you may not use this file except in compliance | 
|  | # with the License. You may obtain a copy of the License at | 
|  | # | 
|  | #   http://www.apache.org/licenses/LICENSE-2.0 | 
|  | # | 
|  | # Unless required by applicable law or agreed to in writing, | 
|  | # software distributed under the License is distributed on an | 
|  | # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | 
|  | # KIND, either express or implied. See the License for the | 
|  | # specific language governing permissions and limitations | 
|  | # under the License. | 
|  | # | 
|  |  | 
|  | struct structA { | 
|  | 1: required i64 sa_i | 
|  | } | 
|  |  | 
|  | struct all_optional { | 
|  | 1: optional string s = "DEFAULT", | 
|  | 2: optional i64 i = 42, | 
|  | 3: optional bool b = false, | 
|  | 4: optional string s2, | 
|  | 5: optional i64 i2, | 
|  | 6: optional bool b2, | 
|  | 7: optional structA aa, | 
|  | 9: optional list<i64> l, | 
|  | 10: optional list<i64> l2 = [1, 2], | 
|  | 11: optional map<i64, i64> m, | 
|  | 12: optional map<i64, i64> m2 = {1:2, 3:4}, | 
|  | 13: optional binary bin, | 
|  | 14: optional binary bin2 = "asdf", | 
|  | } | 
|  |  | 
|  | struct structB { | 
|  | 1: required structA required_struct_thing | 
|  | 2: optional structA optional_struct_thing | 
|  | } | 
|  |  | 
|  | struct structC { | 
|  | 1: string s, | 
|  | 2: required i32 i, | 
|  | 3: optional bool b, | 
|  | 4: required string s2, | 
|  | } |