rminates at a path segment boundary, is used. Matching of
 request URIs to URI templates is performed against encoded path values and implementations will not escape literal
 characters in regex automatically, therefore any literals in <code>regex</code> should be escaped by the author according
 to the rules of <a href="http://tools.ietf.org/html/rfc3986#section-3.3">RFC 3986 section 3.3</a>. Caution is
 recommended in the use of <code>regex</code>, incorrect use can lead to a template parameter matching u