@Nullable
  private static PsiElement findMapOrArgumentList(CompletionParameters parameters) {
    PsiElement parent = parameters.getPosition().getParent();
    if (parent instanceof GrReferenceExpression) {
      if (((GrReferenceExpression)parent).getQualifier() != null) return null;
      return parent.getParent();
    }
    if (parent == null || parent.getParent() == null) {
      return null;
    }
    return parent.getParent().getParent();
  }
@Nullable
  private static PsiElement findMapOrArgumentList(CompletionParameters parameters)