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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_fileinfo(self, filespec, dldir=None):
 """Break down a file specification into its components. Parameters filespec : str The path of the file to load (can be a URL). dldir Returns ------- res : `~ginga.misc.Bunch.Bunch` """

    if dldir is None:
        dldir = self.tmpdir

    # Get information about this file/URL
    info = iohelper.get_fileinfo(filespec, cache_dir=dldir)