Trait use to represent a list of key value parameters, such as query string parameters and matrix parameters
Date: 28/08/2013 Time: 21:21
Date: 28/08/2013 Time: 21:22
http://tools.ietf.org/html/rfc3986
Date: 23/08/2013 Time: 09:10
Date: 28/08/2013 Time: 21:08