code: @Override
      public boolean rmGroup(Node node) {
          LdapGroup group = (LdapGroup) node;
          try {
              deletionCount++;
              ctx.unbind(getOuForNode(group));
          } catch (NamingException ex) {
              handleNamingException(group, ex);
          }
          Node ldapGroup = getGroup(group.getCn());
          return ldapGroup.isEmpty();
      }
docs: Deletes a LDAP-Group.
  
  @param node of the LDAP-Group to be deleted.
  @return true if Group was deleted, otherwise false.