@Test
public void testCopyPart() throws B2Exception {

    final B2CopyPartRequest request = B2CopyPartRequest
            .builder(3, fileId(1), fileId(2))
            .build();
    webifier.copyPart(ACCOUNT_AUTH, request);
    webApiClient.check("postJsonReturnJson.\n" +
            "url:\n" +
            "    apiUrl1/b2api/v2/b2_copy_part\n" +
            "headers:\n" +
            "    Authorization: accountToken1\n" +
            "    User-Agent: SecretAgentMan/3.19.28\n" +
            "    X-Bz-Test-Mode: force_cap_exceeded\n" +
            "request:\n" +
            "    {\n" +
            "      \"largeFileId\": \"4_zBlah_0000002\",\n" +
            "      \"partNumber\": 3,\n" +
            "      \"range\": null,\n" +
            "      \"sourceFileId\": \"4_zBlah_0000001\"\n" +
            "    }\n" +
            "responseClass:\n" +
            "    B2Part\n"
    );
}