public Collection<? extends RepositoryElement> getChildren() {
Collection<RepositoryElement> children = new ArrayList<RepositoryElement>();
// Default set
children.add( new ProjectsElement(this) );
children.add( new VirtualRepositoryRoot(this) );
children.add( new AllSHA1RepositoryRoot(this) );
for(RepositoryExtensionPoint r : RepositoryExtensionPoint.all()) {
children.add( r.getRepositoryRoot(this) );