src/vs/workbench/contrib/debug/common/debugger.ts/Debugger/startDebugging
class Debugger:	async startDebugging(configuration: IConfig, parentSessionId: string): Promise<boolean> {
		const parentSession = this.debugService.getModel().getSession(parentSessionId);
		return await this.debugService.startDebugging(undefined, configuration, { parentSession }, undefined);
	}