public void read(org.apache.thrift.protocol.TProtocol iprot, Log_args struct) throws org.apache.thrift.TException {
        org.apache.thrift.protocol.TField schemeField;
        iprot.readStructBegin();
        while (true)
        {
          schemeField = iprot.readFieldBegin();
          if (schemeField.type == org.apache.thrift.protocol.TType.STOP) { 
            break;
          }
          switch (schemeField.id) {
            case 1: // MESSAGES
              if (schemeField.type == org.apache.thrift.protocol.TType.LIST) {
                {
                  org.apache.thrift.protocol.TList _list0 = iprot.readListBegin();
                  struct.messages = new java.util.ArrayList<LogEntry>(_list0.size);
                  @org.apache.thrift.annotation.Nullable LogEntry _elem1;
                  for (int _i2 = 0; _i2 < _list0.size; ++_i2)
                  {
                    _elem1 = new LogEntry();
                    _elem1.read(iprot);
                    struct.messages.add(_elem1);
                  }
                  iprot.readListEnd();
                }
                struct.setMessagesIsSet(true);
              } else { 
                org.apache.thrift.protocol.TProtocolUtil.skip(iprot, schemeField.type);
              }
              break;
            default:
              org.apache.thrift.protocol.TProtocolUtil.skip(iprot, schemeField.type);
          }
          iprot.readFieldEnd();
        }
        iprot.readStructEnd();

        // check for required fields of primitive type, which can't be checked in the validate method
        struct.validate();
      }
Returns true if field corresponding to fieldID is set (has been assigned a value) and false otherwise
zipkin-collector/scribe/src/main/java/zipkin2/collector/scribe/generated/Scribe.java