def create_and_start_migration(resource_group_name, namespace_name, parameters, custom_headers:nil)
      response = create_and_start_migration_async(resource_group_name, namespace_name, parameters, custom_headers:custom_headers).value!
      response.body unless response.nil?
    end
def create_and_start_migration(resource_group_name, namespace_name, parameters, custom_headers:nil)
      response = create_and_start_migration_async(resource_group_name, namespace_name, parameters, custom_headers:custom_headers).value!
      response.body unless response.nil?
    end
Creates Migration configuration and starts migration of entities from
 Standard to Premium namespace

 @param resource_group_name [String] Name of the Resource group within the
 Azure subscription.
 @param namespace_name [String] The namespace name
 @param parameters [MigrationConfigProperties] Parameters required to create
 Migration Configuration
 @param custom_headers [Hash{String => String}] A hash of custom headers that
 will be added to the HTTP request.

 @return [MigrationConfigProperties] operation results.