static boolean isMountSpec(@Nullable PsiClass psiClass) {
  return psiClass != null && hasAnnotation(psiClass, equals(MountSpec.class.getName()));
}
 

@Override
public Set<Element> extract(RoundEnvironment roundEnvironment) {
  return (Set<Element>) roundEnvironment.getElementsAnnotatedWith(MountSpec.class);
}
 

/**
 * Create a {@link MountSpecModel} from the given {@link TypeElement} and an optional {@link
 * DependencyInjectionHelper}.
 */
@Override
public MountSpecModel create(
    Elements elements,
    Types types,
    TypeElement element,
    Messager messager,
    EnumSet<RunMode> runMode,
    @Nullable DependencyInjectionHelper dependencyInjectionHelper,
    @Nullable InterStageStore interStageStore) {
  return new MountSpecModel(
      element.getQualifiedName().toString(),
      element.getAnnotation(MountSpec.class).value(),
      DelegateMethodExtractor.getDelegateMethods(
          element,
          DELEGATE_METHOD_ANNOTATIONS,
          INTER_STAGE_INPUT_ANNOTATIONS,
          ImmutableList.<Class<? extends Annotation>>of(ShouldUpdate.class),
          messager),
      EventMethodExtractor.getOnEventMethods(
          elements, element, INTER_STAGE_INPUT_ANNOTATIONS, messager, runMode),
      TriggerMethodExtractor.getOnTriggerMethods(
          elements, element, INTER_STAGE_INPUT_ANNOTATIONS, messager, runMode),
      WorkingRangesMethodExtractor.getRegisterMethod(
          element, INTER_STAGE_INPUT_ANNOTATIONS, messager),
      WorkingRangesMethodExtractor.getRangesMethods(
          elements, element, INTER_STAGE_INPUT_ANNOTATIONS, messager),
      UpdateStateMethodExtractor.getOnUpdateStateMethods(
          element, INTER_STAGE_INPUT_ANNOTATIONS, messager),
      interStageStore == null
          ? ImmutableList.of()
          : CachedPropNameExtractor.getCachedPropNames(
              interStageStore, element.getQualifiedName()),
      ImmutableList.copyOf(TypeVariablesExtractor.getTypeVariables(element)),
      ImmutableList.copyOf(PropDefaultsExtractor.getPropDefaults(element)),
      EventDeclarationsExtractor.getEventDeclarations(
          elements, element, MountSpec.class, runMode),
      JavadocExtractor.getClassJavadoc(elements, element),
      AnnotationExtractor.extractValidAnnotations(element),
      TagExtractor.extractTagsFromSpecClass(types, element, runMode),
      JavadocExtractor.getPropJavadocs(elements, element),
      element.getAnnotation(MountSpec.class).isPublic(),
      dependencyInjectionHelper,
      element.getAnnotation(MountSpec.class).isPureRender(),
      element.getAnnotation(MountSpec.class).hasChildLithoViews(),
      element.getAnnotation(MountSpec.class).poolSize(),
      element.getAnnotation(MountSpec.class).canPreallocate(),
      getMountType(elements, element, runMode),
      SpecElementTypeDeterminator.determine(element),
      element,
      mMountSpecGenerator,
      FieldsExtractor.extractFields(element),
      BindDynamicValuesMethodExtractor.getOnBindDynamicValuesMethods(element, messager));
}