count(column, options) {
        return this.forge().count(column, options);
      }
Shortcut to a model's `count` method so you don't need to instantiate a new model to count
the number of records.

@example
Duck.count().then((count) => {
  console.log('number of ducks', count)
})

@method Model.count
@since 0.8.2
@see Model#count
@param {string} [column='*']
  Specify a column to count. Rows with `null` values in this column will be excluded.
@param {Object} [options] Hash of options.
@param {boolean} [options.debug=false]
  Whether to enable debugging mode or not. When enabled will show information about the
  queries being run.
@returns {Promise<number|string>}