public function fullyQualifiedName($class)
    {
        if ($this->namespace) {
            $namespace = str_replace('\\\\', '\\', '\\' . $this->namespace . '\\');
        } else {
            $namespace = '\\'; // global namespace
        }

        if ($this->class === null) {
            $this->class = '';
        }

        if ($class === null) {
            return '';
        }

        if (strcasecmp($class, $this->class) === 0) {
            return $namespace . $this->class;
        }
        $pos = strpos($class, '\\');
        if ($pos !== false) {
            if ($pos === 0) {
                // Fully qualified name (\Foo\Bar)
                return $class;
            }
            // Qualified name (Foo\Bar)
            if ($this->uses) {
                foreach ($this->uses as $alias => $aliasedNamespace) {
                    $alias .= '\\';
                    if (strcasecmp(substr($class, 0, strlen($alias)), $alias) === 0) {
                        // Aliased namespace (use \Long\Namespace as Foo)
                        return '\\' . $aliasedNamespace . substr($class, strlen($alias) - 1);
                    }
                }
            }
        } elseif ($this->uses) {
            // Unqualified name (Foo)
            foreach ($this->uses as $alias => $aliasedNamespace) {
                if (strcasecmp($alias, $class) === 0) {
                    return '\\' . $aliasedNamespace;
                }
            }
        }

        return $namespace . $class;
    }