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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 high_frequency_cutoff_from_config(cp):
 """Gets the high frequency cutoff from the given config file. This looks for ``high-frequency-cutoff`` in the ``[model]`` section and casts it to float. If none is found, will just return ``None``. Parameters cp : WorkflowConfigParser Config file parser to read. Returns ------- float or None : The high frequency cutoff. """

    if cp.has_option('model', 'high-frequency-cutoff'):
        high_frequency_cutoff = float(
            cp.get('model', 'high-frequency-cutoff'))
    else:
        high_frequency_cutoff = None
    return high_frequency_cutoff