internal/storage/postgres/storage.go
func (s *Storage) Describe(in chan<- *prometheus.Desc) {
	s.connections.Describe(in)
	s.queriesTotal.Describe(in)
	s.queriesDuration.Describe(in)
	s.errors.Describe(in)
}
func (s *Storage) Describe(in chan<- *prometheus.Desc) {
	s.connections.Describe(in)
	s.queriesTotal.Describe(in)
	s.queriesDuration.Describe(in)
	s.errors.Describe(in)
}
// Describe implements prometheus Collector interface.