code: @Override
      public Object find(Class entityClass, Object rowId) {
          EntityMetadata metadata = KunderaMetadataManager.getEntityMetadata(kunderaMetadata, entityClass);
          StringBuilder builder = createSelectQuery(rowId, metadata, metadata.getTableName());
          ResultSet rSet = this.execute(builder.toString(), null);
          List results = iterateAndReturn(rSet, metadata);
          return results.isEmpty() ? null : results.get(0);
      }
docs: Finds an entity from database.
  
  @param entityClass
  the entity class
  @param rowId
  the row id
  @return the object