code: public boolean isUpdateForVersionName() {
  		Set<String> uniques = new HashSet<String>();
  		for (VersionHistoryItem item : versionHistoryItems) {
  			uniques.add(item.getVersionName());
  		}
  		return uniques.size() > 1;
  	}
docs: Returns true if the current versionName is not the first version or build that we have seen. Basically, it just
  looks for two or more versionNames.
  
  @return True if this is not the first versionName of the app we've seen.