Dart APIunself_local_databaseLocalDatabasecollection collection property Null safety $CollectionTable collection latefinalinherited Implementation late final $CollectionTable collection = $CollectionTable(this); unself_local_database unself_local_database LocalDatabase collection property LocalDatabase class Constructors LocalDatabase Properties allSchemaEntities allTables allTablesCollections attachedDatabase collection collectionDao connection documentDao executor field hashCode migration options resolvedEngine runtimeType schemaVersion streamQueries streamUpdateRules typeMapping Methods $expandVar $write $writeInsertable alias batch beforeOpen close createMigrator createStream customInsert customSelect customSelectQuery customStatement customUpdate customWriteReturning delete doWhenOpened into markTablesUpdated noSuchMethod notifyUpdates select selectOnly tableUpdates toString transaction update Operators operator ==