code: function _requireParameterCount(count, parameters, rule) {
      if (parameters.length < count) {
        throw Error('Validation rule"' + rule + '" requires at least ' + count + ' parameters.');
      }
    }
docs: check parameters count
  
  @param {Number} count
  @param {Array}  parameters
  @param {String} rule
  
  @return {Void}