@Override
        public String getDisplayName() {
            return displayName;
        }

    }

    private static class DefaultSubjectDescriptor implements SubjectDescriptor {

        private final String displayName;

        public DefaultSubjectDescriptor(String displayName) {
            this.displayName = displayName;
        }

        @Override
        public String getDisplayName() {

Class <org.gradle.tooling.events.transform.internal.DefaultTransformOperationDescriptor$DefaultSubjectDescriptor> is not annotated (directly or via its package) with @org.gradle.api.NonNullApi in (DefaultTransformOperationDescriptor.java:0)