WP_Site_Icon::insert_attachment( array $attachment, string $file ): int

118	public function insert_attachment( $attachment, $file ) {119		$attachment_id = wp_insert_attachment( $attachment, $file );120		$metadata      = wp_generate_attachment_metadata( $attachment_id, $file );121 122		/**123		 * Filters the site icon attachment metadata.124		 *125		 * @since 4.3.0126		 *127		 * @see wp_generate_attachment_metadata()128		 *129		 * @param array $metadata Attachment metadata.130		 */131		$metadata = apply_filters( 'site_icon_attachment_metadata', $metadata );132		wp_update_attachment_metadata( $attachment_id, $metadata );133 134		return $attachment_id;135	}