def start(resource_group_name, lab_account_name, lab_name, environment_setting_name, custom_headers:nil)
      response = start_async(resource_group_name, lab_account_name, lab_name, environment_setting_name, custom_headers:custom_headers).value!
      nil
    end
def start(resource_group_name, lab_account_name, lab_name, environment_setting_name, custom_headers:nil)
      response = start_async(resource_group_name, lab_account_name, lab_name, environment_setting_name, custom_headers:custom_headers).value!
      nil
    end
Starts a template by starting all resources inside the template. This
 operation can take a while to complete

 @param resource_group_name [String] The name of the resource group.
 @param lab_account_name [String] The name of the lab Account.
 @param lab_name [String] The name of the lab.
 @param environment_setting_name [String] The name of the environment Setting.
 @param custom_headers [Hash{String => String}] A hash of custom headers that
 will be added to the HTTP request.