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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 register_types(name, *types):
 """ Register a short name for one or more content types. """


    type_names.setdefault(name, set())
    for t in types:
        # Redirecting the type
        if t in media_types:
            type_names[media_types[t]].discard(t)

        # Save the mapping
        media_types[t] = name
        type_names[name].add(t)