code: async def set_digital_latch(self, command):
          
          pin = int(command[0])
          threshold_value = int(command[1])
          await self.core.set_digital_latch(pin, threshold_value, self.digital_latch_callback)
docs: This method sets the a digital latch for a given digital pin, the threshold type, and latching threshold.
          :param command:{"method": "set_digital_latch", "params": [PIN, THRESHOLD (0 or 1)]}
          :returns:{"method": digital_latch_data_reply", "params": [PIN, DATA_VALUE_LATCHED, TIMESTAMP_STRING]}