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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_media(media_types):
 """Helper method to map the media types."""

    get_mapped_media = (lambda x: maps.VIRTUAL_MEDIA_TYPES_MAP[x]
                        if x in maps.VIRTUAL_MEDIA_TYPES_MAP else None)
    return list(map(get_mapped_media, media_types))