Remove trailing spaces

lib/persisted-model.js

@@ -81,7 +81,7 @@ function convertNullToNotFoundError(ctx, cb) {
  * Create new instance of Model, and save to database.
  *
  * @param {Object}|[{Object}] data Optional data argument.  Can be either a single model instance or an array of instances.
- *  
+ *
  * @callback {Function} callback Callback function called with `cb(err, obj)` signature.
  * @param {Error} err Error object; see [Error object](http://docs.strongloop.com/display/LB/Error+object).
  * @param {Object} models Model instances or null.
@@ -129,7 +129,7 @@ PersistedModel.findOrCreate._delegate = true;
  *
  * @callback {Function} callback Callback function called with `(err, exists)` arguments.  Required.
  * @param {Error} err Error object; see [Error object](http://docs.strongloop.com/display/LB/Error+object).
- * @param {Boolean} exists True if the instance with the specified ID exists; false otherwise. 
+ * @param {Boolean} exists True if the instance with the specified ID exists; false otherwise.
  */
 
 PersistedModel.exists = function exists(id, cb) {
@@ -142,8 +142,7 @@ PersistedModel.exists = function exists(id, cb) {
  * @param {*} id Primary key value
  * @callback {Function} callback Callback function called with `(err, instance)` arguments.  Required.
  * @param {Error} err Error object; see [Error object](http://docs.strongloop.com/display/LB/Error+object).
- * @param {Object} instance Model instance matching the specified ID or null if no instance matches. 
+ * @param {Object} instance Model instance matching the specified ID or null if no instance matches.
-
  */
 
 PersistedModel.findById = function find(id, cb) {
@@ -199,7 +198,7 @@ PersistedModel.find = function find(params, cb) {
  * { key: val, key2: {gt: 'val2'}, ...}
  * ```
  * <br/>See [Where filter](http://docs.strongloop.com/display/LB/Where+filter).
- * 
+ *
  * @callback {Function} callback Callback function called with `(err, returned-instance)` arguments.  Required.
  * @param {Error} err Error object; see [Error object](http://docs.strongloop.com/display/LB/Error+object).
  * @param {Array} model First model instance that matches the filter or null if none found.
@@ -217,8 +216,8 @@ PersistedModel.findOne = function findOne(params, cb) {
  * { key: val, key2: {gt: 'val2'}, ...}
  * ```
  * <br/>See [Where filter](http://docs.strongloop.com/display/LB/Where+filter).
- * 
+ *
- * @callback {Function} callback Optional callback function called with `(err)` argument.  
+ * @callback {Function} callback Optional callback function called with `(err)` argument.
  * @param {Error} err Error object; see [Error object](http://docs.strongloop.com/display/LB/Error+object).
  */
 
@@ -257,7 +256,7 @@ PersistedModel.deleteAll = PersistedModel.destroyAll;
  * @callback {Function} callback Callback function called with `(err, count)` arguments.  Required.
  * @param {Error} err Error object; see [Error object](http://docs.strongloop.com/display/LB/Error+object).
  * @param {Number} count Number of instances updated.
- * 
+ *
  */
 PersistedModel.updateAll = function updateAll(where, data, cb) {
   throwNotAttached(this.modelName, 'updateAll');
@@ -311,9 +310,9 @@ PersistedModel.count = function(where, cb) {
  * @property {Boolean} validate Perform validation before saving.  Default is true.
  * @property {Boolean} throws If true, throw a validation error; WARNING: This can crash Node.
  * If false, report the error via callback.  Default is false.
- * @callback {Function} callback Optional callback function called with `(err, obj)` arguments.  
+ * @callback {Function} callback Optional callback function called with `(err, obj)` arguments.
  * @param {Error} err Error object; see [Error object](http://docs.strongloop.com/display/LB/Error+object).
- * @param {Object} instance Model instance saved or created. 
+ * @param {Object} instance Model instance saved or created.
  */
 
 PersistedModel.prototype.save = function(options, callback) {