Add dockblock to the woocommerce_file_download_method filter

Co-authored-by: Claudio Sanches <[email protected]>

includes/class-wc-download-handler.php

@@ -214,6 +214,13 @@ public static function download( $file_path, $product_id ) {
 		}
 
 		$filename             = apply_filters( 'woocommerce_file_download_filename', $filename, $product_id );
+		/**
+		 * Filter download method.
+		 * 
+		 * @param string $method     Download method.
+		 * @param int    $product_id Product ID.
+		 * @param string $file_path  URL to file.
+		 */
 		$file_download_method = apply_filters( 'woocommerce_file_download_method', get_option( 'woocommerce_file_download_method', 'force' ), $product_id, $file_path );
 
 		// Add action to prevent issues in IE.