docs: private boolean uidAlreadyUsed(String category, String projectName, String uid) {
  		if (uid == null) {
  			return false;
  		}
  		
  		else {
  			for (File versionDirectory : getUidFilesForProject(category, projectName)) {
  				String uidRead = readUid(new File(versionDirectory, "latest"));
  				
  				if (uidRead != null && !uidRead.isEmpty()) {
  					if (uidRead.equals(uid)) {
  						return true;
  					}
  				}
  			}
  			
  			return false;
  		}
  	}