final Issue issue = issueClient.getIssue("TST-3", pm);
assertFalse(issue.getAttachments().iterator().hasNext());
String str = "Wojtek";
final String filename1 = "my-test-file";
issueClient.addAttachment(pm, issue.getAttachmentsUri(), new ByteArrayInputStream(str.getBytes("UTF-8")), filename1);
final String filename2 = "my-picture.png";
issueClient.addAttachment(pm, issue.getAttachmentsUri(), JerseyIssueRestClientTest.class.getResourceAsStream("/attachment-test/transparent-png.png"), filename2);
final Issue issueWithAttachments = issueClient.getIssue("TST-3", pm);
final Iterable<Attachment> attachments = issueWithAttachments.getAttachments();