private static @Nullable PsiCall getCompletedOuterCall(@NotNull PsiExpression argument) {
      PsiElement expressionList = argument.getParent();
      if (expressionList instanceof PsiExpressionList) {
        PsiElement call = expressionList.getParent();
        if (call instanceof PsiCall) {
          PsiCall originalCall = CompletionUtil.getOriginalElement((PsiCall)call);
          if (originalCall != null && JavaMethodCallElement.isCompletionMode(originalCall)) {
            return originalCall;
          }
        }
      }
      return null;
    }
private static @Nullable PsiCall getCompletedOuterCall(@NotNull PsiExpression argument)