src/vs/platform/workspaces/electron-main/workspacesMainService.ts/WorkspacesMainService/getWorkspaceIdentifier
class WorkspacesMainService:	getWorkspaceIdentifier(windowId: number, workspacePath: URI): Promise<IWorkspaceIdentifier> {
		return this.workspacesManagementMainService.getWorkspaceIdentifier(workspacePath);
	}