docs: public synchronized void start(boolean isAndroid) {
          // Cancel any thread attempting to make a connection
          if (mConnectThread != null) {mConnectThread.cancel(); mConnectThread = null;}
          // Cancel any thread currently running a connection
          if (mConnectedThread != null) {mConnectedThread.cancel(); mConnectedThread = null;}
          
          setState(BluetoothState.STATE_LISTEN);
          
          // Start the thread to listen on a BluetoothServerSocket
          if (mSecureAcceptThread == null) {
              mSecureAcceptThread = new AcceptThread(isAndroid);
              mSecureAcceptThread.start();
              BluetoothService.this.isAndroid = isAndroid;
          }
      }