docs: def get_last_price(self, symbols=None, bases=None):
          """
          Function to fetch the most recently executed trade on the order book for each trading pair.
          Execution of this function is as follows::
  
              get_last_price()
              get_last_price(symbols=['SWTH','GAS'])
              get_last_price(bases=['NEO'])
              get_last_price(symbols=['SWTH','GAS'], bases=['NEO'])
  
          The expected return result for this function is as follows::
  
              {
                  'SWTH': {
                      'GAS': '0.0015085',
                      'NEO': '0.00040911'
                  },
                  'GAS': {
                      'NEO': '0.30391642'
                  },
                  ....
              }
  
          :param symbols: The trading symbols to retrieve the last price on the Switcheo Exchange.
          :type symbols: list
          :param bases: The base pair to retrieve the last price of symbols on the Switcheo Exchange.
          :type bases: list
          :return: Dictionary of trade symbols with the most recently executed trade price.
          """
          api_params = {}
          if symbols is not None:
              api_params['symbols'] = symbols
          if bases is not None:
              api_params['bases'] = bases
          return self.request.get(path='/tickers/last_price', params=api_params)