protected function defineAttributes()
{
return array('locale' => array(AttributeType::String, 'default' => craft()->language), 'elementId' => array(AttributeType::Number, 'default' => 0), 'metaType' => array(AttributeType::Enum, 'values' => "default,template", 'default' => 'template'), 'metaPath' => array(AttributeType::String, 'default' => ''), 'seoMainEntityCategory' => array(AttributeType::String, 'default' => ''), 'seoMainEntityOfPage' => array(AttributeType::String, 'default' => ''), 'seoTitle' => array(AttributeType::String, 'default' => ''), 'seoDescription' => array(AttributeType::String, 'default' => ''), 'seoKeywords' => array(AttributeType::String, 'default' => ''), 'seoImageTransform' => array(AttributeType::String, 'default' => ''), 'seoFacebookImageTransform' => array(AttributeType::String, 'default' => ''), 'seoTwitterImageTransform' => array(AttributeType::String, 'default' => ''), 'twitterCardType' => array(AttributeType::String, 'default' => 'summary'), 'openGraphType' => array(AttributeType::String, 'default' => 'website'), 'robots' => array(AttributeType::String, 'default' => ''));
}