code: <T> DynamoDBTable getTable(Class<T> clazz) {
          DynamoDBTable table = clazz.getAnnotation(DynamoDBTable.class);
          if ( table == null )
              throw new DynamoDBMappingException("Class " + clazz + " must be annotated with " + DynamoDBTable.class);
          return table;
      }
docs: Returns the {@link DynamoDBTable} annotation of the class given, throwing
  a runtime exception if it isn't annotated.