docs: 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