char firstLetter = 'T';
	private static String generateNewUsername(String oldUsername,			RoleType roleType, IPerson person) {		if (oldUsername.startsWith("INA")				|| roleType.equals(RoleType.MASTER_DEGREE_CANDIDATE)) {			return oldUsername;		}		char firstLetter = 'T';		if (roleType.equals(RoleType.TEACHER)) {			firstLetter = 'D';		} else if (roleType.equals(RoleType.EMPLOYEE))			firstLetter = 'F';		else if (roleType.equals(RoleType.STUDENT)) {			firstLetter = 'L';			// Verify if it is a Master student			for (IStudent student : person.getStudents()) {				if (student.getDegreeType().equals(DegreeType.MASTER_DEGREE)) {					firstLetter = 'M';					break;				}			}		} else if (roleType.equals(RoleType.GRANT_OWNER))			firstLetter = 'B';		return oldUsername.replace(oldUsername.charAt(0), firstLetter);	} /*