private void scanUsername(String[] params, int slot) throws IllegalArgumentException {
		if (params.length <= slot) {
			throw new IllegalArgumentException("Missing username");
		}
		specifiedUserName = params[slot];
	}
Scan the username from the command-line
@param params are the command-line arguments
@param slot is the position to retrieve the username argument
@throws IllegalArgumentException if the user name is not in the given params
Ghidra/Features/BSim/src/main/java/ghidra/features/bsim/query/BSimControlLaunchable.java