code: protected static function sanitize_item( $item ) {
  
  		if ( is_array( $item ) )
  			$item = ( object )$item;
  
  		if ( empty( $item->ID ) && isset( $item->comment_ID ) )
  			$item->ID = $item->comment_ID;
  
  		if ( isset( $item->post_date_gmt ) )
  			$item->date_gmt = $item->post_date_gmt;
  
  		if ( isset( $item->comment_date_gmt ) )
  			$item->date_gmt = $item->comment_date_gmt;
  
  		return $item;
  	}
docs: normalize comment/post data objects
  
  @param array|object $item
  @return stdClass