List<S3Object> parts = multipartUtils.splitFileIntoObjectsByMaxPartSize(
smallFile.getName(), smallFile);
assertEquals(1, parts.size());
// Split medium file into 5MB object parts
parts = multipartUtils.splitFileIntoObjectsByMaxPartSize(
mediumFile.getName(), mediumFile);
assertEquals(2, parts.size());
// Split large file into 5MB object parts
parts = multipartUtils.splitFileIntoObjectsByMaxPartSize(