eZ\Publish\Core\FieldType\BinaryFile\SearchField::getDefaultMatchField PHP Method

getDefaultMatchField() public method

As field types can index multiple fields (see MapLocation field type's implementation of this interface), this method is used to define default field for matching. Default field is typically used by Field criterion.
public getDefaultMatchField ( ) : string
return string
    public function getDefaultMatchField()
    {
        return 'file_name';
    }