code: public Iterable<GitHub> findGithubConfig(Predicate<GitHubServerConfig> match) {
          Function<GitHubServerConfig, GitHub> loginFunction = loginToGithub();
          if (Objects.isNull(loginFunction)) {
              return Collections.emptyList();
          }
  
          // try all the credentials since we don't know which one would work
          return from(getConfigs())
                  .filter(match)
                  .transform(loginFunction)
                  .filter(Predicates.notNull());
      }
docs: Filters all stored configs against given predicate then
  logs in as the given user and returns the non null connection objects