public function getElementByIdentifier($elementIdentifier)
    {
        return isset($this->elementsByIdentifier[$elementIdentifier]) ? $this->elementsByIdentifier[$elementIdentifier] : null;
    }
public function getElementByIdentifier($elementIdentifier)
    {
        return isset($this->elementsByIdentifier[$elementIdentifier]) ? $this->elementsByIdentifier[$elementIdentifier] : null;
    }
public function getElementByIdentifier ( $ elementIdentifier ) { return isset ( $ this -> elementsByIdentifier [ $ elementIdentifier ] ) ? $ this -> elementsByIdentifier [ $ elementIdentifier ] : null ; }
Get a Form Element by its identifier

If identifier does not exist, returns NULL.

@param string $elementIdentifier
@return FormElementInterface The element with the given $elementIdentifier or NULL if none found
@api
Get a Form Element by its identifier