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So, looking at the above organization, BarChartExpression has properties from AbstractChartExpression, CategoricalChartExpression, and StackedCategoricalChartExpression, and it may have it's its own properties unique to Bar Charts as well. RingChartExpression has properties from AbstractChartExpression, and PieChartExpression. And, like the Bar Chart, may have additional properties that are unique to ring chartsRing Charts.
To avoid duplicating information, each of the expressions will be documented, and a reference to all of the ancestors will be included so it's possible to reference any additional properties.
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