@Override
public void execute() {
InstanceGroup result = _userVmService.createVmGroup(this);
if (result != null) {
InstanceGroupResponse response = _responseGenerator.createInstanceGroupResponse(result);
response.setResponseName(getCommandName());
this.setResponseObject(response);
} else {
throw new ServerApiException(ApiErrorCode.INTERNAL_ERROR, "Failed to create vm instance group");
}
}