Problem: when swagger access apidoc/apis/mounts via http://127.0.0.1:8181/apidoc/explorer/index.html，
the explorer can't show mounted resources, only some undefined.
Walk the source code in sal-rest-docgen, find that the method "getListOfMounts" of
org.opendaylight.netconf.sal.rest.doc.impl.ApiDocServiceImpl generate a response json string entity.

{"instance":"/network-topology:network-topology/topology/topology-netconf/node/test/","id":1}

]
but it will be converted by org.opendaylight.aaa.provider.GsonProvider(located aaa-shiro)
specified in ApiDocApplication. GsonProvider internally use com.google.gson.Gson to do this：

public void writeTo(T type, Class<?> theClass, Type genericType, Annotation[] annotations,
MediaType mediaType, MultivaluedMap<String, Object> httpHeaders,
OutputStream entityStream) throws WebApplicationException {

try (PrintWriter printWriter = new PrintWriter(entityStream)) {
String json;
final MultivaluedMap<String, String> queryParameters = ui != null ? ui.getQueryParameters() : null;
if (queryParameters != null && queryParameters.containsKey(PRETTY_PRINT))

{ json = prettyGson.toJson(type); }

else

{ json = gson.toJson(type); }

printWriter.write(json);
printWriter.flush();
}
}
}

The problem is here, when the type parameter itself is a json string , it is no need to converted.
otherwise, the special character in type will escape.
For examle, GET /apidoc/apis/mounts will expect to return:
[\{"instance":"/network-topology:network-topology/topology/topology-netconf/node/test/","id":1}]

But now the string above will be converted by GsonProvider to:
"[\{\"instance\":\"/network-topology:network-topology/topology/topology-netconf/node/test/\",\"id\":1}]"

when the explorer/lib/odl/list_mounts.js, as follow:
var loadMountList = function( dom ) {
dom.empty();
dom.append( "<p>Loading. Please wait...</p>" );
$.ajax( {
url: "/apidoc/apis/mounts",
datatype: 'jsonp',
success: function( strData ){
var myData = strData;
var list = $( "<table></table>" );
for( var key in myData )

{ list.append( "<tr><td><a href=\"#\" onclick=\"loadMount(" + myData[key].id + ", '" + myData[key].instance + "')\">" + myData[key].instance + "</a></td></tr>"); }

dom.empty();
dom.append( list );
}
} );
}
will treat it as string other than a json object, so the page can't show the apis of mounted points.