code: def describe(self, attribute=None):
      if attribute == "info":
          return pd.DataFrame(
              [["dummy", self._get_model_verison()]],
              columns=["type", "version"],
          )
      elif isinstance(attribute, list):
          return pd.DataFrame(
              [[".".join(attribute), self._get_model_verison()]],
              columns=["attribute", "version"],
          )
      else:
          tables = ["info"]
          return pd.DataFrame(tables, columns=["tables"])
  
file_path: mindsdb/tests/unit/dummy_ml_handler/dummy_ml_handler.py
imports: import pandas
  from mindsdb.integrations.libs.base import BaseMLEngine
label_desc: Use image node_id 5 for calling the DummyHandler obj's underlying member method code with example usage: obj.describe(attribute) and returns: pd, pd, pd