private static void replaceExpression(PsiMethodCallExpression callExpression, PsiLambdaExpression element) {
    PsiExpression expression;
    final CommentTracker ct = new CommentTracker();
    inlineCallArguments(callExpression, element, ct);
    // body could be invalidated after inlining
    expression = LambdaUtil.extractSingleExpressionFromBody(element.getBody());
    ct.replaceAndRestoreComments(callExpression, expression);
  }
private static void replaceExpression(PsiMethodCallExpression callExpression, PsiLambdaExpression element)