import "github.com/glycerine/go-capnproto" // create a new message and segment root msg, seg, err := capnp.NewMessage(capnp.SingleSegment(nil)) if err != nil { // handle error } // create a new struct using the Segment Root myStruct, err := seg.NewRoot(MyStruct_Type) if err != nil { // handle error } // set some fields on the struct myStruct.SetField1(42) myStruct.SetField2("hello, world")In this example, we create a new Cap'n Proto message using the `NewMessage` function, and get a reference to the message's Segment Root using the `NewRoot` method. We then set some fields on the struct using the generated accessors (in this case, `SetField1` and `SetField2`). Overall, this code takes advantage of the `go-capnproto` package to work with Cap'n Proto serialization format in Go.