src/vs/workbench/contrib/debug/common/debugger.ts/Debugger/substituteVariables
class Debugger:	substituteVariables(folder: IWorkspaceFolder | undefined, config: IConfig): Promise<IConfig> {
		return this.adapterManager.substituteVariables(this.type, folder, config).then(config => {
			return this.configurationResolverService.resolveWithInteractionReplace(folder, config, 'launch', this.variables, config.__configurationTarget);
		});
	}