code: public static GraphQLFieldDefinition field (String fieldName, String tableName) {
          return newFieldDefinition()
                  .name(fieldName)
                  .type(GraphQLInt)
                  .dataFetcher(new RowCountFetcher(tableName))
                  .build();
      }
docs: Convenience method to create a field in a GraphQL schema that fetches the number of rows in a table.
  Must be on a type that has a "namespace" field for context.