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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(self, name, arch):
 """ Get an implementation of the given function specialized for the given arch, or a stub procedure if none exists. :param name: The name of the function as a string :param arch: The architecure to use, as either a string or an archinfo.Arch instance :return: A SimProcedure instance representing the function as found in the library """

        if type(arch) is str:
            arch = archinfo.arch_from_id(arch)
        if name in self.procedures:
            proc = copy.deepcopy(self.procedures[name])
            self._apply_metadata(proc, arch)
            return proc
        else:
            return self.get_stub(name, arch)