// import the necessary package import ( "github.com/gogo/protobuf/protoc-gen-gogo/descriptor" ) // create a new FieldDescriptorProto field := &descriptor.FieldDescriptorProto{ Name: "my_field", Type: descriptor.FieldDescriptorProto_TYPE_MESSAGE, TypeName: "my.package.Message", Label: descriptor.FieldDescriptorProto_LABEL_OPTIONAL, Number: 1, DefaultValue: "", } // get the type name of this field typeName := field.GetTypeName() fmt.Printf("Type name: %s\n", typeName)In this example, we create a new FieldDescriptorProto with a message type and a type name of "my.package.Message". We then call the `GetTypeName` method to retrieve the type name and print it to the console. The package library for this code example is the "github.com/gogo/protobuf/protoc-gen-gogo/descriptor" package.