Package state declares grpclb types to be set by resolvers wishing to pass information to grpclb via resolver.State Attributes.
Set returns a copy of the provided state with attributes containing s. s's data should not be mutated after calling Set.
State contains gRPCLB-relevant data passed from the name resolver.
Get returns the grpclb State in the resolver.State, or nil if not present. The returned data should not be mutated.