Imports of package metric

PathSynopsis
google.golang.org/genproto/googleapis/api
google.golang.org/genproto/googleapis/api/label
google.golang.org/protobuf/reflect/protoreflectPackage protoreflect provides interfaces to dynamically manipulate messages.
google.golang.org/protobuf/runtime/protoimplPackage protoimpl contains the default implementation for messages generated by protoc-gen-go.
google.golang.org/protobuf/types/known/durationpbPackage durationpb contains generated types for google/protobuf/duration.proto.
reflectPackage reflect implements run-time reflection, allowing a program to manipulate objects with arbitrary types.
syncPackage sync provides basic synchronization primitives such as mutual exclusion locks.