code: @Override
  	public void addShare(Context context, SocializeSession session, Entity entity, String text, ShareType shareType, Location location, ShareListener listener) {
  		addShare(context, session, entity, text, shareType, null, location, listener);
  	}
docs: /*
  (non-Javadoc)
  @see com.socialize.api.action.ShareSystem#addShare(android.content.Context, com.socialize.api.SocializeSession, com.socialize.entityKey.Entity, java.lang.String, com.socialize.api.action.ShareType, android.location.Location, com.socialize.listener.share.ShareListener)