src/vs/workbench/contrib/tasks/browser/abstractTaskService.ts/AbstractTaskService/computeJsonSchemaVersion
class AbstractTaskService:	private computeJsonSchemaVersion(workspaceFolder: IWorkspaceFolder): JsonSchemaVersion {
		let { config } = this.getConfiguration(workspaceFolder);
		if (!config) {
			return JsonSchemaVersion.V2_0_0;
		}
		return TaskConfig.JsonSchemaVersion.from(config);
	}