code: public boolean isUserAdmin(String userName) {
  
          if (CmsStringUtil.isEmptyOrWhitespaceOnly(userName)) {
              return false;
          }
          return m_userAdmin.equals(userName);
      }
docs: Checks if a given user name is the name of the admin user.<p>
  
  @param userName the user name to check
  
  @return <code>true</code> if a given user name is the name of the admin user