in src/plugins/MongoDBPlugin.ts [106:115]
const collFindOneFunc = function (this: any, operation: string, span: any, args: any[]): boolean {
// args = [query, options, callback]
span.tag(
Tag.dbStatement(
`${this.s.namespace.collection}.${operation}(${typeof args[0] !== 'function' ? stringify(args[0]) : ''})`,
),
);
return wrapCallbackWithCursorMaybe(span, args, 0);
};