You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: sourcediff_component.rb
    path of file: ./repos/open-build-service/src/api/app/components
    
    the code of the file until where you have to start completion: class SourcediffCompo
    
  def target_package
    # For not accepted maintenance incident requests, the package is not there.
    return nil unless @action[:tpkg]

    Package.get_by_project_and_name(@action[:tprj], @action[:tpkg], { follow_multibuild: true })
  rescue Package::UnknownObjectError, Project::Errors::UnknownObjectError
  end