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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 generate_all_aliases(fieldfile, include_global):
 """ Generate all of a file's aliases. :param fieldfile: A ``FieldFile`` instance. :param include_global: A boolean which determines whether to generate thumbnails for project-wide aliases in addition to field, model, and app specific aliases. """

    all_options = aliases.all(fieldfile, include_global=include_global)
    if all_options:
        thumbnailer = get_thumbnailer(fieldfile)
        for key, options in six.iteritems(all_options):
            options['ALIAS'] = key
            thumbnailer.get_thumbnail(options)