docs: final synchronized public boolean[] readCoils(int serverAddress, int startAddress, int quantity) throws
              ModbusProtocolException, ModbusNumberException, ModbusIOException {
          ModbusRequest request = ModbusRequestBuilder.getInstance().buildReadCoils(serverAddress, startAddress, quantity);
          ReadCoilsResponse response = (ReadCoilsResponse) processRequest(request);
          return response.getCoils();
      }