public function getPlugins()
    {
        if (!$this->_plugins) {

            $manifest = $this->getPluginPath() . '/composer.json';

            if (!file_exists($manifest)) {
                return array();
            }

            $contents = file_get_contents($manifest);

            if ($contents === false) {
                return array();
            }

            $data = json_decode($contents);

            if (!isset($data->require)) {
                return array();
            }

            $this->_plugins = array();

            foreach ($data->require as $package => $version)
            {
                $file = $this->getPluginPath() . '/vendor/' . $package . '/composer.json';

                if (file_exists($file))
                {
                    $json     = file_get_contents($file);
                    $manifest = json_decode($json);

                    if (is_null($manifest)) {
                        continue;
                    }

                    if (isset($manifest->type) && $manifest->type == 'joomlatools-console-plugin') {
                        $this->_plugins[$package] = $version;
                    }
                }
            }
        }

        return $this->_plugins;
    }