in src/plugins/MongoDBPlugin.ts [97:104]
const collUpdateFunc = function (this: any, operation: string, span: any, args: any[]): boolean {
// args = [filter, update, options, callback]
span.tag(Tag.dbStatement(`${this.s.namespace.collection}.${operation}(${stringify(args[0])})`));
if (agentConfig.mongoTraceParameters) span.tag(Tag.dbMongoParameters(stringify(args[1])));
return wrapCallbackWithCursorMaybe(span, args, 2);
};