private void collectProperties() {
    MavenProjectsManager s = MavenProjectsManager.getInstance(myProject);
    Map<String, String> result = new LinkedHashMap<>();

    for (MavenProject each : s.getProjects()) {
      Properties properties = each.getProperties();
      result.putAll((Map)properties);
    }

    myProperties = result;
  }
private void collectProperties()