title: Is RabbitMQ's AMQP.BasicProperties.Builder thread-safe?
body: <p>Title is pretty much self-explanatory.</p>
  
  <p>Is <a href="http://www.rabbitmq.com/releases/rabbitmq-java-client/v3.1.5/rabbitmq-java-client-javadoc-3.1.5/com/rabbitmq/client/AMQP.BasicProperties.Builder.html" rel="nofollow"><code>AMQP.BasicProperties.Builder</code></a> thread-safe? Citations/sources?</p>
  
  <p>I can't find anything that indicates either way...</p>