code: public static boolean existsTable(String appid) {
  		if (StringUtils.isBlank(appid)) {
  			return false;
  		}
  		try {
  			DescribeTableResult res = getClient().describeTable(getTableNameForAppid(appid));
  			return res != null;
  		} catch (Exception e) {
  			return false;
  		}
  	}
docs: Checks if the main table exists in the database.
  @param appid name of the {@link com.erudika.para.core.App}
  @return true if the table exists