public @NotNull Collection<? extends GradleBuild> getGradleBuilds() {
    List<GradleBuild> gradleBuilds = new ArrayList<>();
    gradleBuilds.add(myRootGradleBuild);
    gradleBuilds.addAll(myNestedGradleBuilds);
    return gradleBuilds;
  }
public @NotNull Collection<? extends GradleBuild> getGradleBuilds()