+ /**
+ * @since 1.21
+ *
+ * @param $tableName string The table name
+ * @param $fieldName string The field to be modified
+ * @param $sqlPath string The path to the SQL change path
+ */
+ public function modifyExtensionField( $tableName, $fieldName, $sqlPath) {
+ $this->extensionUpdates[] = array( 'modifyField', $tableName, $fieldName, $sqlPath, true );
+ }
+