lib/resources/Alert.js
function (data, config, cb) {
            if (data.keys === undefined) {
                return new Error("details param can not be empty.");
            }
            api.delete(this.baseURL + 'details', data, config, cb);
        }
function (data, config, cb) {
            if (data.keys === undefined) {
                return new Error("details param can not be empty.");
            }
            api.delete(this.baseURL + 'details', data, config, cb);
        }
Remove details request is used to remove details from alerts in OpsGenie
One of id or alias parameters should be specified with add details request. Alias option can only be used for open alerts
Also, details param is mandatory as "keys" : { "prop1", "prop2" }

@deprecated