def validate_at_subscription_scope(deployment_name, parameters, custom_headers:nil)
      response = validate_at_subscription_scope_async(deployment_name, parameters, custom_headers:custom_headers).value!
      response.body unless response.nil?
    end
def validate_at_subscription_scope(deployment_name, parameters, custom_headers:nil)
      response = validate_at_subscription_scope_async(deployment_name, parameters, custom_headers:custom_headers).value!
      response.body unless response.nil?
    end
Validates whether the specified template is syntactically correct and will be
 accepted by Azure Resource Manager..

 @param deployment_name [String] The name of the deployment.
 @param parameters [Deployment] Parameters to validate.
 @param custom_headers [Hash{String => String}] A hash of custom headers that
 will be added to the HTTP request.

 @return [DeploymentValidateResult] operation results.