private List<StreamField> createStreamFields() {
        List<StreamField> streamFieldList = Lists.newArrayList();
        streamFieldList.add(new StreamField(0, FieldType.STRING.toString(), "name", null, null));
        streamFieldList.add(new StreamField(1, FieldType.INT.toString(), "age", null, null));
        streamFieldList.add(new StreamField(2, FieldType.DECIMAL.toString(), "score", null, null));
        streamFieldList.add(new StreamField(3, FieldType.TIMESTAMP.toString(), "ts", null, null));
        return streamFieldList;
    }
Test class for file to iceberg.
inlong-manager/manager-client-examples/src/test/java/org/apache/inlong/manager/client/File2IcebergExample.java