code: public ServiceFuture<EncryptionProtectorInner> beginCreateOrUpdateAsync(String resourceGroupName, String serverName, EncryptionProtectorInner parameters, final ServiceCallback<EncryptionProtectorInner> serviceCallback) {
          return ServiceFuture.fromResponse(beginCreateOrUpdateWithServiceResponseAsync(resourceGroupName, serverName, parameters), serviceCallback);
      }
docs: Updates an existing encryption protector.
  
  @param resourceGroupName The name of the resource group that contains the resource. You can obtain this value from the Azure Resource Manager API or the portal.
  @param serverName The name of the server.
  @param parameters The requested encryption protector resource state.
  @param serviceCallback the async ServiceCallback to handle successful and failed responses.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the {@link ServiceFuture} object