Dart APIunself_local_databaseFieldToOrm FieldToOrm extension Null safety on FieldData Methods toDomain({required Collection collection}) → Field toOrm() → GeneratedColumn<Object> unself_local_database unself_local_database FieldToOrm extension unself_local_database library Classes $CollectionTable $FieldTable Collection CollectionCompanion CollectionDao CollectionData CollectionOrm DocumentDao Field FieldCompanion FieldData ListConverter LocalDatabase MapConverter Extensions CollectionFromDomain CollectionToOrm FieldFromDomain FieldToOrm Functions connect Methods toDomain toOrm