This class is a Service! It is a top-level singleton which can be retrieved using the
This item is not replicated across Roblox’s server/client boundary.
This object cannot be created with the Instance.new constructor function.
PluginGuiService is a service that stores
PluginGui objects to be displayed in Roblox Studio. It only allows PluginGuis to be direct children of the service, and PluginGuis are not allowed to be parented anywhere besides the service.