code: public void delete(String vaultName, String resourceGroupName, String policyName) {
          deleteWithServiceResponseAsync(vaultName, resourceGroupName, policyName).toBlocking().single().body();
      }
docs: Deletes specified backup policy from your Recovery Services Vault. This is an asynchronous operation. Status of the operation can be fetched using GetPolicyOperationResult API.
  
  @param vaultName The name of the recovery services vault.
  @param resourceGroupName The name of the resource group where the recovery services vault is present.
  @param policyName Backup policy to be deleted.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @throws CloudException thrown if the request is rejected by server
  @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent