Addressing review comments

ads/feature_store/statistics/charts/box_plot.py

@@ -66,6 +66,16 @@ def __init__(
         self.box_points = box_points
         super().__init__()
 
+    def __validate__(self):
+        if (
+            self.q1 is None
+            or self.q3 is None
+            or self.iqr is None
+            or type(self.box_points) is not list
+            or len(self.box_points) == 0
+        ):
+            return self.ValidationFailedException()
+
     def add_to_figure(self, fig: Figure, xaxis: int, yaxis: int):
         xaxis_str, yaxis_str, x_str, y_str = self.get_x_y_str_axes(xaxis, yaxis)
         fig.add_box(

ads/feature_store/statistics/statistics.py

@@ -27,6 +27,12 @@ def kind(self) -> str:
         return "statistics"
 
     def to_viz(self, feature_list: List[str] = None):
+        """Visualises statistics inside notebook
+        Parameters
+        ----------
+        feature_list: (str, optional). Defaults to `None`.
+            The specific features of the FeatureGroup or Dataset we want to visualise
+        """
         if self.content is not None:
             [
                 FeatureStatistics.from_json(feature, stat).to_viz()