orm.go
func (s *Schema) Indexes() map[string]*Index {
	result := make(map[string]*Index)
	for k, v := range s.indexes {
		result[k] = v.copy()
	}
	return result
}
func (s *Schema) Indexes() map[string]*Index {
	result := make(map[string]*Index)
	for k, v := range s.indexes {
		result[k] = v.copy()
	}
	return result
}
// Indexes return a copy of the indexes in this schema