def create_or_update(device_name, name, storage_account_credential, resource_group_name, custom_headers:nil)
      response = create_or_update_async(device_name, name, storage_account_credential, resource_group_name, custom_headers:custom_headers).value!
      response.body unless response.nil?
    end
def create_or_update(device_name, name, storage_account_credential, resource_group_name, custom_headers:nil)
      response = create_or_update_async(device_name, name, storage_account_credential, resource_group_name, custom_headers:custom_headers).value!
      response.body unless response.nil?
    end
Creates or updates the storage account credential.

 @param device_name [String] The device name.
 @param name [String] The storage account credential name.
 @param storage_account_credential [StorageAccountCredential] The storage
 account credential.
 @param resource_group_name [String] The resource group name.
 @param custom_headers [Hash{String => String}] A hash of custom headers that
 will be added to the HTTP request.

 @return [StorageAccountCredential] operation results.