src/vs/workbench/services/configurationResolver/common/variableResolver.ts/AbstractVariableResolverService/resolveWithEnvironment
class AbstractVariableResolverService:	public resolveWithEnvironment(environment: IProcessEnvironment, root: IWorkspaceFolder | undefined, value: string): Promise<string> {
		return this.recursiveResolve({ env: this.prepareEnv(environment), userHome: undefined }, root ? root.uri : undefined, value);
	}