code: @Override
  	public InvocationResponse sendActivity(SPFActivity activity) {
  		Utils.logCall(TAG, "sendActivity", activity);
  		InvocationResponse response;
  		try {
  			response = SPF.get().getServiceRegistry().sendActivity(activity);
  		} catch (Throwable t) {
  			response = InvocationResponse.error("remote exception : " + t.getMessage());
  		}
  		return response;
  	}
docs: /*
  (non-Javadoc)
  
  @see
  it.polimi.spf.framework.proximity.InboundProximityInterface#sendActivity
  (java.lang.String)