presto-iceberg/src/main/java/io/prestosql/plugin/iceberg/IcebergSessionProperties.java/IcebergSessionProperties/dataSizeProperty
class IcebergSessionProperties:    private static PropertyMetadata<DataSize> dataSizeProperty(String name, String description, DataSize defaultValue, boolean hidden)
    {
        return new PropertyMetadata<>(
                name,
                description,
                VARCHAR,
                DataSize.class,
                defaultValue,
                hidden,
                value -> DataSize.valueOf((String) value),
                DataSize::toString);
    }