private void checkFactoryNotNull(Object factory) {
Preconditions.checkNotNull(factory, "factory cannot be null");
}
public void map(ChildAttributeResolver resolver, String attribute) {
Preconditions.checkNotBlank(attribute, "Attribute cannot be empty");
Preconditions.checkNotNull(resolver, "Resolver cannot be null");
childAttributeResolvers.put(attribute, resolver);
}
private void checkViewAttributeClassNotNull(Class<?> viewAttributeClass) {
Preconditions.checkNotNull(viewAttributeClass, "viewAttributeClass cannot be null");
}