What is the test for awarding attorney's fees for abuse of discretion?

"We review a district court's award of attorney's fees for abuse of discretion, which occurs when (1) the court's decision rests on an error of law (such as application of the wrong legal principle) or clearly erroneous factual finding, or (2) its decision -- though not necessarily the product of a legal error or a clearly erroneous factual finding -- cannot be located within the range of permissible decisions." McDaniel v. Cty. of Schenectady, 595 F.3d 411, 416 (2d Cir. 2010) (internal citation, quotation marks, and brackets omitted).