code: private function registerWorkflowRunnersHook()
  	{
  		$this->app->afterResolving(function(WorkflowRunner $runner, $app)
  		{
  			$runner->setWorkflow($app['cerbero.workflow']);
  		});
  	}
docs: Register the hook for the workflow runners.
  
  @author	Andrea Marco Sartori
  @return	void