code: def __repr__(self):
      return "{}:{}".format(
          self.__class__.__name__,
          "".join(f"{k}=={v}" for k, v in self.info.items()),
      )
  
imports: from contextlib import contextmanager
  from typing import TYPE_CHECKING, Any, Callable, Dict, Iterator, Optional
  from funcy import compact, log_durations
  from dvc.exceptions import DvcException
  from dvc.log import logger
  from .base import Dependency
label_desc: Use image node_id 3 for calling the DbDependency obj's underlying member method code with example usage: obj.__repr__() and returns: str