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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 create(client, mosaic=False, **kw):
    '''Create a Downloader with the provided client.

    :param mosaic bool: If True, the Downloader will fetch mosaic quads.
    :returns: :py:Class:`planet.api.downloader.Downloader`
    '''
    if mosaic:
        return _MosaicDownloader(client, **kw)
    else:
        return _Downloader(client, **kw)