get parsed content with default attribute error

[wyli]

Describe the bug
get parsed content with default

from monai.bundle import ConfigParser

config = {"my_dim": 2}
cfg = ConfigParser(config)
print(cfg.get_parsed_content("my_dim"))  # 2
print(cfg.get_parsed_content("test_key", default=1))

2
Traceback (most recent call last):
  File "/Users/Documents/MONAI/my_test_2.py", line 6, in <module>
    print(cfg.get_parsed_content("test_key", default=1))
  File "/Users/Documents/MONAI/monai/bundle/config_parser.py", line 291, in get_parsed_content
    return self.ref_resolver.get_resolved_content(id=id, **kwargs)
  File "/Users/Documents/MONAI/monai/bundle/reference_resolver.py", line 190, in get_resolved_content
    return self._resolve_one_item(id=id, **kwargs)
  File "/Users/Documents/MONAI/monai/bundle/reference_resolver.py", line 130, in _resolve_one_item
    item_config = item.get_config()
AttributeError: 'int' object has no attribute 'get_config'

Expected behavior
no attribute error