coding style

Author: dg

src/Database/Table/IRow.php

@@ -40,5 +40,5 @@ function related(string $key, string $throughColumn = null): GroupedSelection;
 	/**
 	 * Returns referenced row.
 	 */
-	function ref(string $key, string $throughColumn = null): ?IRow;
+	function ref(string $key, string $throughColumn = null): ?self;
 }

src/Database/Table/SqlBuilder.php

@@ -244,7 +244,7 @@ public function getParameters(): array
 	}
 
 
-	public function importConditions(SqlBuilder $builder): void
+	public function importConditions(self $builder): void
 	{
 		$this->where = $builder->where;
 		$this->joinCondition = $builder->joinCondition;