public void addTagToVmAsync(final String vmId,Tag tag,final FutureCallback<Task> responseCallback) throws IOException {
  String path=String.format("%s/%s/tags",getBasePath(),vmId);
  createObjectAsync(path,serializeObjectAsJson(tag),responseCallback);
}

public void addTagToVmAsync ( final String vmId , Tag tag , final FutureCallback < Task > responseCallback ) throws IOException { String path = String . format ( "%s/%s/tags" , getBasePath ( ) , vmId ) ; createObjectAsync ( path , serializeObjectAsJson ( tag ) , responseCallback ) ; }
add the specified tag to the specified vm .
