src/Routing/Route.php
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