if (!attr_or.ok()) return failure();
      rewriter.replaceOpWithNewOp<TF::ConstOp>(op, attr_or.value());
      return success();
    }

    // Extract individual tensor list element and combine them using the tf.Pack
    // op.
    Location loc = op.getLoc();
    llvm::SmallVector<Value, 4> values;
    values.reserve(tensors.size());
    for (const tensorflow::Tensor &tensor : tensors) {

		}

	}

	// Defensive code: Do not allow any operation if no policy is found in the session token
	if !isOwnerDerived && len(policies) == 0 {
		return false
	}

	// 2. Combine the mapped policies into a single combined policy.

	var combinedPolicy policy.Policy
	if !isOwnerDerived {
		var err error
		combinedPolicy, err = sys.store.GetPolicy(strings.Join(policies, ","))

	delete(cache.iamPolicyDocsMap, policy)
	cache.updatedAt = time.Now()

	return nil
}

// GetPolicy - gets the policy definition. Allows specifying multiple comma
// separated policies - returns a combined policy.
func (store *IAMStoreSys) GetPolicy(name string) (policy.Policy, error) {
	if name == "" {
		return policy.Policy{}, errInvalidArgument
	}

	cache := store.rlock()
	defer store.runlock()