original_string: public function featured_image_id() {
  		if ( isset( $this->featured_image_id ) ) {
  			return $this->featured_image_id;
  		}
  		$this->featured_image_id = \get_post_thumbnail_id( $this->post );
  		return $this->featured_image_id;
  	}
code: public function featured_image_id() {
  		if ( isset( $this->featured_image_id ) ) {
  			return $this->featured_image_id;
  		}
  		$this->featured_image_id = \get_post_thumbnail_id( $this->post );
  		return $this->featured_image_id;
  	}
code_tokens: public function featured_image_id ( ) { if ( isset ( $ this -> featured_image_id ) ) { return $ this -> featured_image_id ; } $ this -> featured_image_id = \ get_post_thumbnail_id ( $ this -> post ) ; return $ this -> featured_image_id ; }
docstring: Returns Featured Image ID.
  
  @return bool|int|mixed|string
docstring_tokens: Returns Featured Image ID .