function isExtendedService($alias)
    {
        $cAlias = $this->_normalizeName($alias);
        return isset($this->aliases[$cAlias]);
    }
function isExtendedService($alias)
    {
        $cAlias = $this->_normalizeName($alias);
        return isset($this->aliases[$cAlias]);
    }
function isExtendedService ( $ alias ) { $ cAlias = $ this -> _normalizeName ( $ alias ) ; return isset ( $ this -> aliases [ $ cAlias ] ) ; }
Determine if we have an alias name
that extend service

@param  string $alias

@return bool
@throws \Exception
Determine if we have an alias name that extend service