WildcardFileFilter filterDescription never used in FileBrowserComponent?

It seems that the third parameter in the constructor of a WildcardFileFilter is never used in the FileBrowserComponent. Is that correct? Am I expected to use getDescription and show it myself someplace? Currently, I don’t see it in my component. I can move that FileBrowserComponent down some and add it myself, but just making sure that I am not missing something here. Is it expected top show someplace automatically?