code: def get_all_nodes(self, addr, is_syscall=None, anyaddr=False):
          
          results = [ ]
  
          for cfg_node in self.graph.nodes():
              if cfg_node.addr == addr or (anyaddr and
                                           cfg_node.size is not None and
                                           cfg_node.addr <= addr < (cfg_node.addr + cfg_node.size)
                                           ):
                  if is_syscall and cfg_node.is_syscall:
                      results.append(cfg_node)
                  elif is_syscall is False and not cfg_node.is_syscall:
                      results.append(cfg_node)
                  else:
                      results.append(cfg_node)
  
          return results
docs: Get all CFGNodes whose address is the specified one.
  
          :param addr:       Address of the node
          :param is_syscall: True returns the syscall node, False returns the normal CFGNode, None returns both
          :return:           all CFGNodes