private boolean verifyNotNull(Node methodName, Node arg) {
    if (arg == null) {
      compiler.report(
          JSError.make(
              methodName,
              ProcessClosurePrimitives.NULL_ARGUMENT_ERROR,
              methodName.getQualifiedName()));
      return false;
    }
    return true;
  }
private boolean verifyNotNull ( Node methodName , Node arg ) { if ( arg == null ) { compiler . report ( JSError . make ( methodName , ProcessClosurePrimitives . NULL_ARGUMENT_ERROR , methodName . getQualifiedName ( ) ) ) ; return false ; } return true ; }
@return Whether the argument checked out okay