// Writing the header of a struct field with ID 1 and type TType_STRING proto := thrift.NewTBinaryProtocol(tc) proto.WriteFieldBegin("name", thrift.TType_STRING, 1) // Writing the header of a union field with ID 2 and type TType_I32 proto := thrift.NewTJSONProtocol(tc) proto.WriteFieldBegin("age", thrift.TType_I32, 2)In these examples, tc is a TTransport object used to write data to a buffer. The first parameter of WriteFieldBegin is the field name, followed by its data type and ID. Overall, the github.com.apache.thrift.lib.go.thrift package library is a comprehensive and powerful tool for implementing cross-language communication in Go.