private String createComponentChanges(){
  StringBuilder builder=new StringBuilder();
  for (  ServiceCatalogDiff serviceCatalogDiff : diffList) {
    builder.append(createApiChanges(serviceCatalogDiff));
  }
  return builder.toString();
}

private String createComponentChanges ( ) { StringBuilder builder = new StringBuilder ( ) ; for ( ServiceCatalogDiff serviceCatalogDiff : diffList ) { builder . append ( createApiChanges ( serviceCatalogDiff ) ) ; } return builder . toString ( ) ; }
construct details of api changes by service and component name
