aMutableFileItemHeaders.addHeader("Content-Disposition", "form-data; name=\"FileItem\"; filename=\"file1.txt\"");
aMutableFileItemHeaders.addHeader("Content-Type", "text/plain");
aMutableFileItemHeaders.addHeader("TestHeader", "headerValue1");
aMutableFileItemHeaders.addHeader("TestHeader", "headerValue2");
aMutableFileItemHeaders.addHeader("TestHeader", "headerValue3");
aMutableFileItemHeaders.addHeader("testheader", "headerValue4");
Iterator headerNameEnumeration = aMutableFileItemHeaders.getHeaderNames();
assertEquals("content-disposition", (String) headerNameEnumeration.next());
assertEquals("content-type", (String) headerNameEnumeration.next());