code: public void setOptAll(boolean all) {
      if (all && (optOnly || optInclude)) {
        throw new IllegalArgumentException(ExceptionMessageMap.getMessage("000100")
            + "  The \"all\" option can not be set when the \"only\" or \"include\" option is set.");
      }
      this.optAll = all;
    }
docs: Sets the '-a' options to &lt;git-status&gt; command. If any one of the optOnly or OptInclude
  options are set then optAll should not be set. While setting optAll to true, if optOnly or
  optInclude is set set then <code>IllegalArgumentException</code> is thrown.
  
  @param all