code: @Nonnull
    public PageViewExternalHTMLCleanser setServerPrefixPath (@Nonnull @Nonempty final String sServerPrefixPath)
    {
      ValueEnforcer.notEmpty (sServerPrefixPath, "ServerPrefixPath");
      ValueEnforcer.isTrue (sServerPrefixPath.endsWith ("/"), "ServerPrefixPath must end with a slash");
      m_sServerPrefixPath = sServerPrefixPath;
      return this;
    }
docs: Set the link prefix that will be added to links missing the prefix. If set,
  must end with a slash ("/")
  
  @param sServerPrefixPath
  The link prefix to use. May neither be <code>null</code> nor empty
  @return this for chaining
  @since 7.0.2