async setImmutabilityPolicy(immutabilityPolicy, options = {}) {
        return tracingClient.withSpan("BlobClient-setImmutabilityPolicy", options, async (updatedOptions) => {
            return assertResponse(await this.blobContext.setImmutabilityPolicy({
                immutabilityPolicyExpiry: immutabilityPolicy.expiriesOn,
                immutabilityPolicyMode: immutabilityPolicy.policyMode,
                tracingOptions: updatedOptions.tracingOptions,
            }));
        });
    }
Set immutability policy on the blob.

@param options - Optional options to set immutability policy on the blob.