public void addUser(String username, X500Principal x500User)
			throws DuplicateNameException, IOException {
		char[] passwordHash = enableLocalPasswords ? getDefaultPasswordHash() : null;
		addUser(username, passwordHash, x500User);
	}
Add a user.
@param username user name/SID
@param x500User X500 distinguished name for user (may be null)
@throws DuplicateNameException if username already exists
@throws IOException if IO error occurs
Ghidra/Features/GhidraServer/src/main/java/ghidra/server/UserManager.java