code: def get(self, key, default=None):
      if isinstance(key, (list, tuple)):
          return tuple(self.get(key=x, default=default) for x in key)
      elif key in self:
          return self[key]
      else:
          return default
  
imports: from collections import OrderedDict
  from tensorforce import TensorforceError
label_desc: Use image node_id 20 for calling the NestedDict obj's underlying member method code with example usage: obj.get(key, default) and returns: tuple, self, default