WP_Site_Icon::intermediate_image_sizes( array $sizes = array() )

	public function intermediate_image_sizes( $sizes = array() ) {
		/** This filter is documented in wp-admin/includes/class-wp-site-icon.php */
		$this->site_icon_sizes = apply_filters( 'site_icon_image_sizes', $this->site_icon_sizes );
		foreach ( $this->site_icon_sizes as $size ) {
			$sizes[] = 'site_icon-' . $size;
		}

		return $sizes;
	}