code: async def read(cls, node, id):
          
          if isinstance(node, str):
              system_id = node
          elif isinstance(node, Node):
              system_id = node.system_id
          else:
              raise TypeError(
                  "node must be a Node or str, not %s"
                  % type(node).__name__)
          return cls(await cls._handler.read(system_id=system_id, id=id))
docs: Get `Bcache` by `id`.