public function getFpn(): FilePathNormalizerInterface
    {
        if (null === $this->fpn) {
            $this->fpn = new FilePathNormalizer();
        }
        return $this->fpn;
    }
public function getFpn(): FilePathNormalizerInterface
    {
        if (null === $this->fpn) {
            $this->fpn = new FilePathNormalizer();
        }
        return $this->fpn;
    }
public function getFpn ( ) : FilePathNormalizerInterface { if ( null === $ this -> fpn ) { $ this -> fpn = new FilePathNormalizer ( ) ; } return $ this -> fpn ; }
Get the instance of FilePathNormalizerInterface.

Act like one time factory if property has not already been set.

@return FilePathNormalizerInterface Return the instance.
@since 0.2.0-dev Added to making using class easier.
@api
Get the instance of FilePathNormalizerInterface .