in TeamCity.GitHubIssues-server/src/main/java/jetbrains/buildServer/issueTracker/github/health/IssueTrackerSuggestion.java [94:100]
private Set<String> extractFetchUrls(@NotNull final Stream<List<? extends VcsRoot>> stream) {
return stream.flatMap(List::stream)
.filter(it -> GIT_VCS_NAME.equals(it.getVcsName()))
.map(it -> it.getProperty(GIT_FETCH_URL_PROPERTY))
.filter(Objects::nonNull)
.collect(Collectors.toSet());
}