def train_project(project_id, custom_headers:nil)
      response = train_project_async(project_id, custom_headers:custom_headers).value!
      response.body unless response.nil?
    end
def train_project(project_id, custom_headers:nil)
      response = train_project_async(project_id, custom_headers:custom_headers).value!
      response.body unless response.nil?
    end
Queues project for training

 @param project_id The project id
 @param custom_headers [Hash{String => String}] A hash of custom headers that
 will be added to the HTTP request.

 @return [Iteration] operation results.