google.golang.org/protobuf/reflect/protoregistry.Types.FindExtensionByName (method, view implemented interface methods)

one use

	google.golang.org/protobuf/reflect/protoregistry (current package)
		registry.go#L666: func (r *Types) FindExtensionByName(field protoreflect.FullName) (protoreflect.ExtensionType, error) {