code: static TableSchema parseTableSchema(String tableSchemaJson) throws IOException {
      JsonParser parser = JacksonFactory.getDefaultInstance().createJsonParser(tableSchemaJson);
      return parser.parseAndClose(TableSchema.class);
    }
docs: Parses table schema JSON into {@link TableSchema}.
  
  @param tableSchemaJson JSON table schema to convert to {@link TableSchema}
  @return {@link TableSchema}
  @throws IOException if the JSON is invalid.