github.com/refraction-networking/utls.UnimplementedPreSharedKeyExtension.mustEmbedUnimplementedPreSharedKeyExtension (method, view implemented interface methods)

one use

	github.com/refraction-networking/utls (current package)
		u_pre_shared_key.go#L96: func (UnimplementedPreSharedKeyExtension) mustEmbedUnimplementedPreSharedKeyExtension() {}