Method writeCommand

app/src/main/java/com/sun/mail/iap/Protocol.java:323–339

(String command, Argument args)

    }

    public String writeCommand(String command, Argument args) 
		throws IOException, ProtocolException {
	// assert Thread.holdsLock(this);
	// can't assert because it's called from constructor
	String tag = tagPrefix + Integer.toString(tagCounter++); // unique tag

	output.writeBytes(tag + " " + command);
    
	if (args != null) {
	    output.write(' ');
	    args.write(this);
	}

	output.write(CRLF);
	output.flush();
	return tag;
    }

    /**
     * Send a command to the server. Collect all responses until either