public boolean serviceHasValidUntagResourceOperation(ToShapeId serviceId) {
        return serviceUntagOperationIsValid.contains(serviceId.toShapeId());
    }
Gets the verification result of whether or not the service has a named UntagResource operation that meets the
expected critiera for UntagResource.

@param serviceId the ShapeID of the service shape the UntagResource operation should be bound to.
@return True iff the service shape has a service bound operation named 'UntagResource' that also satisfies
  the criteria for a valid UntagResource operation.
smithy-aws-traits/src/main/java/software/amazon/smithy/aws/traits/tagging/AwsTagIndex.java