code: protected String getVersion() {
  
      Manifest manifest = ManifestLoader.loadManifest(getClass());
      String versionNumber = null;
      if (manifest != null) {
        versionNumber = ManifestLoader.getValue(manifest, Attributes.Name.IMPLEMENTATION_VERSION);
        if (versionNumber == null) {
          versionNumber = ManifestLoader.getValue(manifest, Attributes.Name.SPECIFICATION_VERSION);
        }
      }
      if (versionNumber == null) {
        versionNumber = SNAPSHOT;
      }
      return versionNumber;
    }
docs: This method gets the Version of this program.
  
  @return the program-version.