// create a new Thrift protocol encoder protocol := thrift.NewTBinaryProtocol(transport) // write the message header protocol.WriteMessageBegin("helloWorld", thrift.CALL, 0) // write some data to the stream protocol.WriteString("Hello, world!") // signal the end of the message protocol.WriteMessageEnd() // flush the protocol writer to the underlying transport protocol.Flush()In this example, we create a new `TBinaryProtocol` encoder that will write binary data to a transport (in this case, a socket or file). We then use `WriteMessageBegin()` to write the header for our message (with the name "helloWorld", using a "call" type, and a message ID of 0). We then write some data to the stream (in this case, a string), and then signal the end of the message using `WriteMessageEnd()`. Finally, we flush the protocol writer to ensure that all data is written to the transport. Overall, the `github.com/apache/thrift/lib/go/thrift` package provides a comprehensive set of tools for working with the Thrift protocol in Go, including support for multiple data formats, transport types, and message types.