public function elements(): array
    {
        if (!isset($this->_unspecifiedTypes)) {
            $this->_unspecifiedTypes = array_map(
                function (Element $el) {
                    return new UnspecifiedType($el);
                }, $this->_elements);
        }
        return $this->_unspecifiedTypes;
    }
public function elements(): array
    {
        if (!isset($this->_unspecifiedTypes)) {
            $this->_unspecifiedTypes = array_map(
                function (Element $el) {
                    return new UnspecifiedType($el);
                }, $this->_elements);
        }
        return $this->_unspecifiedTypes;
    }
public function elements ( ) : array { if ( ! isset ( $ this -> _unspecifiedTypes ) ) { $ this -> _unspecifiedTypes = array_map ( function ( Element $ el ) { return new UnspecifiedType ( $ el ) ; } , $ this -> _elements ) ; } return $ this -> _unspecifiedTypes ; }
Get elements in the structure.

@return UnspecifiedType[]
Get elements in the structure .