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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 _console(console: Any) -> Any: """Return a cffi console."""

    try:
        return console.console_c
    except AttributeError:
        warnings.warn(
            (
                "Falsy console parameters are deprecated, "
                "always use the root console instance returned by "
                "console_init_root."
            ),
            DeprecationWarning,
            stacklevel=3,
        )
        return ffi.NULL