code: public static Record findByIds(String tableName, String primaryKey, Object... idValues) {
  		return MAIN.findByIds(tableName, primaryKey, idValues);
  	}
docs: Find record by ids.
  <pre>
  Example:
  Record user = Db.findByIds("user", "user_id", 123);
  Record userRole = Db.findByIds("user_role", "user_id, role_id", 123, 456);
  </pre>
  @param tableName the table name of the table
  @param primaryKey the primary key of the table, composite primary key is separated by comma character: ","
  @param idValues the id value of the record, it can be composite id values