This method visualizes the `unidata` and `multidata` objects by plotting both the original time series and the fitted values. The `unidata` (`multidata`) object is converted into a `zoo` object for plotting, and the fitted values are added as a secondary line with a different style and color.
Arguments
- x
An object of class `unidata` or `multidata`. This object must contain the time series in the `series` slot, the associated time points in the `times` slot, and the fitted values in the `fitted_values` slot.
- ...
Additional arguments passed to the `plot.zoo` function for customizing the plot (e.g., titles, colors, etc.).