code: def _download_options(self, date=None):
      if date is None:
          url = f"{self._base_url}/v7/finance/options/{self.ticker}"
      else:
          url = f"{self._base_url}/v7/finance/options/{self.ticker}?date={date}"
  
      r = self._data.get(url=url, proxy=self.proxy).json()
      if len(r.get("optionChain", {}).get("result", [])) > 0:
          for exp in r["optionChain"]["result"][0]["expirationDates"]:
              self._expirations[
                  _datetime.datetime.utcfromtimestamp(exp).strftime(
                      "%Y-%m-%d"
                  )
              ] = exp
  
          self._underlying = r["optionChain"]["result"][0].get(
              "quote", {}
          )
  
          opt = r["optionChain"]["result"][0].get("options", [])
  
          return (
              dict(**opt[0], underlying=self._underlying)
              if len(opt) > 0
              else {}
          )
      return {}
  
imports: from __future__ import print_function
  import datetime
  from collections import namedtuple
  import pandas
  from .base import TickerBase
label_desc: Use image node_id 3 for calling the Ticker obj's underlying member method code with example usage: obj._download_options(date) and returns: dict, unknown