public static Schema schema(Configuration config) {
    return SchemaParser.fromJson(config.get(InputFormatConfig.TABLE_SCHEMA));
  }
Returns the Table Schema serialized to the configuration.
@param config The configuration used to get the data from
@return The Table Schema object
iceberg/iceberg-handler/src/main/java/org/apache/iceberg/mr/hive/HiveIcebergStorageHandler.java