code: def topsSSE(symbols=None, on_data=None, token='', version=''):
      '''TOPS provides IEX’s aggregated best quoted bid and offer position in near real time for all securities on IEX’s displayed limit order book.
      TOPS is ideal for developers needing both quote and trade data.
  
      https://iexcloud.io/docs/api/#tops
  
      Args:
          symbols (string); Tickers to request
          on_data (function): Callback on data
          token (string); Access token
          version (string); API version
  
      '''
      return _runSSE('tops', symbols, on_data, token, versionf topsSSE(symbols=None, on_data=None, token='', version=''):
      '''TOPS provides IEX’s aggregated best quoted bid and offer position in near real time for all securities on IEX’s displayed limit order book.
      TOPS is ideal for developers needing both quote and trade data.
  
      https://iexcloud.io/docs/api/#tops
  
      Args:
          symbols (string); Tickers to request
          on_data (function): Callback on data
          token (string); Access token
          version (string); API version
  
      '''
      return _runSSE('tops', symbols, on_data, token, version)
docs: TOPS provides IEX’s aggregated best quoted bid and offer position in near real time for all securities on IEX’s displayed limit order book.
      TOPS is ideal for developers needing both quote and trade data.
  
      https://iexcloud.io/docs/api/#tops
  
      Args:
          symbols (string); Tickers to request
          on_data (function): Callback on data
          token (string); Access token
          version (string); API version