static record noeq /*mapMethodLike*/ FunctionCall(Object function, Object... args) implements Transformable/*, IJavaXExpr*/ {
  sS _fieldOrder = "function args";
  
  // !customConstructor
  *(Object *function, Object... *args) {
    if (empty(this.args)) this.args = null;
  }
  
  *(Object function, L args) {
    this(function, toObjectArray(args));
  }
  
  toString {
    ret function + "(" + joinWithComma(allToString(args)) + ")";
  }
  
  S toStringWithOptionalParens() {
    ret empty(args) ? str(function) : toString();
  }
  
  public bool equals(O o) {
    ret o instanceof FunctionCall
      && eq(function, o/FunctionCall.function)
      && objectArraysEqual(args, o/FunctionCall.args);
  }
  
  public int hashCode() {
    ret hashAboutObjects(function, asList(args));
  }
  
  L args() { ret asList(args); }
  
  public Object transformUsing(IF1 f) {
    ret new FunctionCall(f.get(function), mapObjectArray(f, args));
  }
}