docs: function(whereProperties, whereValue, whereEquals)
    {
      var where = createWhere( whereProperties, whereValue, whereEquals );
  
      for (var i = 0; i < this.length; i++)
      {
        var model = this[ i ];
  
        if ( where( model ) )
        {
          return model;
        }
      }
  
      return null;
    }