lib/operations/collection_ops.js
function indexInformation(coll, options, callback) {
  indexInformationDb(coll.s.db, coll.s.name, options, callback);
}
function indexInformation(coll, options, callback) {
  indexInformationDb(coll.s.db, coll.s.name, options, callback);
}
function indexInformation ( coll , options , callback ) { indexInformationDb ( coll . s . db , coll . s . name , options , callback ) ; }
Retrieve this collection's index info.

@method
@param {Collection} a Collection instance.
@param {object} [options] Optional settings. See Collection.prototype.indexInformation for a list of options.
@param {Collection~resultCallback} [callback] The command result callback
Retrieve this collection s index info .