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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 get_stub(self, name, arch):
 """ Get a stub procedure for the given function, regardless of if a real implementation is available. This will apply any metadata, such as a default calling convention or a function prototype. By stub, we pretty much always mean a ``ReturnUnconstrained`` SimProcedure with the appropriate display name and metadata set. This will appear in ``state.history.descriptions`` as ``<SimProcedure display_name (stub)>`` :param name: The name of the function as a string :param arch: The architecture to use, as either a string or an archinfo.Arch instance :return: A SimProcedure instance representing a plausable stub as could be found in the library. """

        proc = self.fallback_proc(display_name=name, is_stub=True)
        self._apply_metadata(proc, arch)
        return proc