// wonderful
}
URI uri = this.uriBuilderWithVars.build("123", "456", "");
assertEqualsURI("http://localhost/abc/123/def/456.", uri);
ExtendedUriBuilder uriBuilder2 = this.uriBuilderWithVars.clone();
assertEqualsURI("http://localhost/abc/123/def/456.html", uriBuilder2
.build("123", "456", "html"));
assertEquals(this.uriBuilderWithVars.toString(), uriBuilder2.toString());
uriBuilder2.path("{var3}");
uri = this.uriBuilderWithVars.build("123", "456", "pdf");
assertEqualsURI("http://localhost/abc/123/def/456.pdf", uri);