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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 send_prefix(pymux, variables):
 """ Send prefix to active pane. """

    process = pymux.arrangement.get_active_pane().process

    for k in pymux.key_bindings_manager.prefix:
        vt100_data = prompt_toolkit_key_to_vt100_key(k)
        process.write_input(vt100_data)