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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 msg2long_form(msg, processor, **config):
 """ Return a 'long form' text representation of a message. For most message, this will just default to the terse subtitle, but for some messages a long paragraph-structured block of text may be returned. """

    result = processor.long_form(msg, **config)
    if not result:
        result = processor.subtitle(msg, **config)
    return result