src/vs/workbench/contrib/extensions/browser/extensionsActions.ts/InstallAnotherVersionAction/update
class InstallAnotherVersionAction:	update(): void {
		this.enabled = !!this.extension && !this.extension.isBuiltin && !!this.extension.gallery && !!this.extension.local && !!this.extension.server && this.extension.state === ExtensionState.Installed;
	}