src/vs/workbench/api/common/extHostExtensionActivator.ts/ExtensionActivationTimesBuilder/constructor
class ExtensionActivationTimesBuilder:	constructor(startup: boolean) {
		this._startup = startup;
		this._codeLoadingStart = -1;
		this._codeLoadingStop = -1;
		this._activateCallStart = -1;
		this._activateCallStop = -1;
		this._activateResolveStart = -1;
		this._activateResolveStop = -1;
	}