anchor.diff:        $f = $f.call;
       }
       if (!($f instanceof Function)) {
  -      $throwNoSuchMethodFunc($obj, $name, $args);
  +      $throwNoSuchMethodFunc($obj, $name, $args, originalFunction);
       }
     }
     // If f is a function, but not a method (no method type)
  
positive.code: 
    // TODO(leafp): throw a type error (rather than NSM)
    // if the arity matches but the types are wrong.
    $throwNoSuchMethodFunc($obj, $name, $args, $f);
  })()''');
  
  dcall(f, @rest args) => JS('', '''(() => {
  
negative.code: })()''');
  
  checkAndCall(f, ftype, obj, args, name) => JS('', '''(() => {
    let originalFunction = $f;
    if (!($f instanceof Function)) {
      // We're not a function (and hence not a method either)
      // Grab the `call` method if it's not a function.
  