public EntityAutocompleteController::handleAutocomplete(Request $request, $target_type, $selection_handler, $selection_settings_key)
Autocomplete the label of an entity.
Parameters
\Symfony\Component\HttpFoundation\Request $request: The request object that contains the typed tags.
string $target_type: The ID of the target entity type.
string $selection_handler: The plugin ID of the entity reference selection handler.
string $selection_settings_key: The hashed key of the key/value entry that ho