docs: public synchronized boolean removeDeployedExtension(String name, ModuleIdentifier identifier) {
          final Set<ExtensionJar> jars = this.extensions.get(name);
          if (jars != null) {
              final Iterator<ExtensionJar> it = jars.iterator();
              while (it.hasNext()) {
                  final ExtensionJar jar = it.next();
                  if (jar.moduleIdentifier.equals(identifier)) {
                      it.remove();
                      return true;
                  }
              }
          }
          return false;
      }