public AlterableInterface::addMetaData($key, $object)
Adds additional metadata to the query.
Often, a query may need to provide additional contextual data to alter hooks. Alter hooks may then use that information to decide if and how to take action.
$key: The unique identifier for this piece of metadata. Must be a string that follows the same rules as any other PHP identifier.
$object: The additional data to add to the query. May be any valid PHP variable.
\Drupal\Core\Database\Query\AlterableInterface The called object.
public function addMetaData($key, $object);
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