title: OkHttpClient close connection
body: <p>I'd like to use OkHttpClient to load a url, and if the website at the given url responds with a pdf content type I will go ahead and download the PDF, otherwise I want to ignore the response. </p>
  
  <p>My question is, do I need to do anything special to close the request/response or do I need to do anything to indicate that i won't be using the response if I choose to not read the response bytestream? If not, when does OkHttpClient close the connection? </p>