docs: def _get_irsb(self, v):
          """
          Get the IRSB object from an address, a SimRun, or a CFGNode.
          :param v: Can be one of the following: an address, or a CFGNode.
          :return: The IRSB instance.
          :rtype: pyvex.IRSB
          """
  
          if isinstance(v, CFGNode):
              v = v.addr
  
          if type(v) is int:
              # Generate an IRSB from self._project
  
              if v in self._run_cache:
                  return self._run_cache[v]
  
              if self.project:
                  irsb = self.project.factory.block(v, backup_state=self._base_state).vex
                  self._run_cache[v] = irsb
                  return irsb
              else:
                  raise AngrBladeError("Project must be specified if you give me all addresses for SimRuns")
  
          else:
              raise AngrBladeError('Unsupported SimRun argument type %s', type(v))