code: function(cb) {
                async.each(t.__libraries,
                    function(library, cb) {
                      library.scanForClasses(err => {
                        log.debug("Finished scanning for " + library.getNamespace());
                        cb(err);
                      });
                    },
                    err => {
                      log.debug("Finished scanning for all libraries");
                      cb(err);
                    });
              }
docs: Find all classes