code: def keys_eager(
      self,
      path: Union[AimObjectKey, AimObjectPath] = (),
  ):
      return list(self.subtree(path).keys())
  
imports: from copy import deepcopy
  from aim.storage.types import CustomObjectBase
  from aim.storage.types import AimObject, AimObjectKey, AimObjectPath
  from aim.storage.treearrayview import TreeArrayView
  from aim.storage.treeview import TreeView
  from typing import Any, Iterator, Tuple, Union
label_desc: Use image node_id 7 for calling the InMemoryTreeView obj's underlying member method code with example usage: obj.keys_eager(path) and returns: list