func (s *Set) Get(v string) Dependency {
	s.RLock()
	defer s.RUnlock()
	return s.set[v]
}
func (s *Set) Get(v string) Dependency {
	s.RLock()
	defer s.RUnlock()
	return s.set[v]
}
// Get retrieves a single element from the set by name.