private static String buildFooter(){
  if (footer == null) {
    StringBuilder strb=new StringBuilder();
    strb.append(RIGHT_SQUARE_BRACKET);
    strb.append(RIGHT_BRACE);
    footer=strb.toString();
  }
  return footer;
}

private static String buildFooter ( ) { if ( footer == null ) { StringBuilder strb = new StringBuilder ( ) ; strb . append ( RIGHT_SQUARE_BRACKET ) ; strb . append ( RIGHT_BRACE ) ; footer = strb . toString ( ) ; } return footer ; }
build the footer of a scenario
