What is the purpose of the recycle-bin folder?

Seafile Client
1

This folder contains something that I have no knowledge of. Something called Cypress:

E:\SEAFILE\RECYCLE-BIN
└───Win7-8.1_2.5.1.65
└───Cypress
├───win8
│ ├───x64
│ │ └───apps
│ └───x86
│ └───apps
└───win81
├───x64
│ └───apps
└───x86
└───apps

Any ideas?