The vSphere Client SDK contains the following directories to aid developers who create plug-ins.
docs
Detailed instructions for setting up IDEs.
Documentation for JavaScript API used by UI components of plug-ins.
FAQ with troubleshooting and development advice for plug-in developers.
libs
Run-time libraries for Spring framework and vSphere API RPC. This directory is not used for remote plug-ins.
samples
A complete remote plug-in sample that demonstrates both client-side and server-side modules, as well as accompanying metadata.
tools
Scripts to assist with development tasks.
vsphere-ui
A complete version of the vSphere Client, both client and server modules.