code: public boolean userInGroup(String username, String groupname) throws CmsException {
  
          return (m_securityManager.userInGroup(m_context, username, groupname));
      }
docs: Tests if a user is member of the given group.<p>
  
  @param username the name of the user to test
  @param groupname the name of the group to test
  
  @return <code>true</code>, if the user is in the group; or <code>false</code> otherwise
  
  @throws CmsException if operation was not successful