docs: boolean isDisplayNameUnique(String displayName, String currentJobName) {
          Collection<TopLevelItem> itemCollection = items.values();
  
          // if there are a lot of projects, we'll have to store their
          // display names in a HashSet or something for a quick check
          for(TopLevelItem item : itemCollection) {
              if(item.getName().equals(currentJobName)) {
                  // we won't compare the candidate displayName against the current
                  // item. This is to prevent an validation warning if the user
                  // sets the displayName to what the existing display name is
                  continue;
              }
              else if(displayName.equals(item.getDisplayName())) {
                  return false;
              }
          }
  
          return true;
      }