add arg to type

Author: saihaj

src/type/validate.ts

@@ -630,7 +630,7 @@ function getAllNodes<T extends ASTNode, K extends ASTNode>(
 
 function getAllSubNodes<T extends ASTNode, K extends ASTNode, L extends ASTNode>(
   object: SDLDefinedObject<T, K>,
-  getter: (T | K) => Maybe<(L | ReadonlyArray<L>)>,
+  getter: (_arg: T | K) => Maybe<(L | ReadonlyArray<L>)>,
 ): ReadonlyArray<L> {
   let subNodes = [];
   for (const node of getAllNodes(object)) {