+#' \item index_in_data: corresponding index in data object}
+#' @field .dates vector of day indices where forcast occurs
+#'
+#' @section Methods:
+#' \describe{
+#' \item{\code{initialize(dates)}}{
+#' Initialize a Forecast object with a series of date indices.}
+#' \item{\code{getSize()}}{
+#' Return number of individual forecasts.}
+#' \item{\code{append(new_serie, new_params, new_index_in_data)}}{
+#' Acquire a new individual forecast, with its (optimized) parameters and the corresponding
+#' index in the dataset.}
+#' \item{\code{getDates()}}{
+#' Get dates where forecast occurs.}
+#' \item{\code{getSerie(index)}}{
+#' Get forecasted serie at specified index.}
+#' \item{\code{getParams(index)}}{
+#' Get parameters at specified index (for 'Neighbors' method).}
+#' \item{\code{getIndexInData(index)}}{
+#' Get index in data which corresponds to current forecast.}