improve documentation for UploadedFilesAware

The documentation only lists one file

|public void withUploadedFiles(List<UploadedFile> uploadedFiles) { if 
(!uploadedFiles.isEmpty()) { this.uploadedFile = uploadedFiles.get(0); 
this.fileName = uploadedFile.getName(); this.contentType = 
uploadedFile.getContentType(); this.originalName = 
uploadedFile.getOriginalName(); } }|

For multiple files these need populating

privateFile[]uploadedFiles=null;

privateString[]uploadedFilesContentType=null;

privateString[]uploadedFilesFileName=null;

We have to loop and do it ourselves now?