code: private boolean validateUnaliasablePrimitiveCall(NodeTraversal t, Node n, String methodName) {
      return validatePrimitiveCallWithMessage(t, n, methodName, CLOSURE_CALL_CANNOT_BE_ALIASED_ERROR);
    }
docs: Verifies that a) the call is in the global scope and b) the return value is unused
  
  <p>This method is for primitives that never return a value.