public function exists($name)
	{
	    $name = $this->normalizeServiceName($name);
	    return $this->getCommandManager()->hasListeners($name);
	}
public function exists($name)
	{
	    $name = $this->normalizeServiceName($name);
	    return $this->getCommandManager()->hasListeners($name);
	}
public function exists ( $ name ) { $ name = $ this -> normalizeServiceName ( $ name ) ; return $ this -> getCommandManager ( ) -> hasListeners ( $ name ) ; }
Test if a service exists

Any services that are currently disabled, are not
taken into account.

@param string $name
Test if a service exists