org.sonar.server.plugins
Classes 
ApplicationDeployer
BatchResourcesServlet
ClassLoaderUtils
DefaultServerPluginRepository
PluginDeployer
PluginDownloader
PluginUpdate
ServerExtensionInstaller
SonarUpdate
StaticResourcesServlet
UpdateCenterClient
UpdateCenterMatrix
UpdateCenterMatrixFactory
Enums 
PluginUpdate.Status