convenience.go
func (r *Registry) Reservoir(name string, tags []string) *Reservoir {
	factory := func() interface{} { return NewReservoir() }
	return r.fetchReservoir(name, tags, factory)
}
func (r *Registry) Reservoir(name string, tags []string) *Reservoir {
	factory := func() interface{} { return NewReservoir() }
	return r.fetchReservoir(name, tags, factory)
}
func ( r * Registry ) Reservoir ( name string , tags [ ] string ) * Reservoir { factory := func ( ) interface { } { return NewReservoir ( ) } return r . fetchReservoir ( name , tags , factory ) }
// Reservoir fetches an instrument from the registry or creates a new one.
//
// If another instrument type is already registered with the same
// name/tags, a blank one will be returned and an error
// will be logged to the Errors() channel.
Reservoir fetches an instrument from the registry or creates a new one . If another instrument type is already registered with the same name / tags a blank one will be returned and an error will be logged to the Errors () channel .