protected function getSortFieldName(
        SortClause $sortClause,
        $contentTypeIdentifier,
        $fieldDefinitionIdentifier,
        $name = null
    ) {
        return $this->fieldNameResolver->getSortFieldName(
            $sortClause,
            $contentTypeIdentifier,
            $fieldDefinitionIdentifier,
            $name
        );
    }
protected function getSortFieldName(
        SortClause $sortClause,
        $contentTypeIdentifier,
        $fieldDefinitionIdentifier,
        $name = null
    ) {
        return $this->fieldNameResolver->getSortFieldName(
            $sortClause,
            $contentTypeIdentifier,
            $fieldDefinitionIdentifier,
            $name
        );
    }
protected function getSortFieldName ( SortClause $ sortClause , $ contentTypeIdentifier , $ fieldDefinitionIdentifier , $ name = null ) { return $ this -> fieldNameResolver -> getSortFieldName ( $ sortClause , $ contentTypeIdentifier , $ fieldDefinitionIdentifier , $ name ) ; }
Get sort field name.

@param \eZ\Publish\API\Repository\Values\Content\Query\SortClause $sortClause
@param string $contentTypeIdentifier
@param string $fieldDefinitionIdentifier
@param string $name

@return array
Get sort field name .