input: 
  def sru_api_example():
      """
      Demonstrates how to use the "sru" class to perform a search on the KB SRU API.
      
      >>> api = sru()
      >>> result = api.search("example query", collection="GGC")
      >>> result.titles
      ['Example Title 1', 'Example Title 2']
      """
      api = sru()
      result = api.search("example query", collection="GGC")
      return result
  
output:     api = sru()
      result = api.search("example query", collection="GGC")
      return result