code: function(value, index, defaultValue) {
  		return helpers.valueOrDefault(helpers.isArray(value) ? value[index] : value, defaultValue);
  	}
docs: Returns value at the given `index` in array if defined, else returns `defaultValue`.
  @param {Array} value - The array to lookup for value at `index`.
  @param {number} index - The index in `value` to lookup for value.
  @param {*} defaultValue - The value to return if `value[index]` is undefined.
  @returns {*}