public function getProcessIdentifier(): ?ResourceIdentifierInterface
    {
        if (!$id = $this->getProcessId()) {
            return null;
        }

        return ResourceIdentifier::create($this->getProcessType(), $id);
    }
public function getProcessIdentifier(): ?ResourceIdentifierInterface
    {
        if (!$id = $this->getProcessId()) {
            return null;
        }

        return ResourceIdentifier::create($this->getProcessType(), $id);
    }
public function getProcessIdentifier ( ) : ? ResourceIdentifierInterface { if ( ! $ id = $ this -> getProcessId ( ) ) { return null ; } return ResourceIdentifier :: create ( $ this -> getProcessType ( ) , $ id ) ; }
Get the process identifier for the route.

@return ResourceIdentifierInterface|null
@deprecated 2.0.0
Get the process identifier for the route .