EasyUpload api

hello there
i’m a new fash of vaadin,and using it to develop s.t for few days

cause i’m not good at English~it takes me a long time to learn basic vaadin~
but there’re still some features that I haven’t understand,like Upload.
so,I found easy upload to solve this problem~
an’t like other add-ons~easy upload has many functions to use

if someone could send me a api-doc for easy upload
that would be grateful~thx~

my mail:ceo@yitac.com