OptionaltitleOverrides the layer's announced title. Maps to MaidrLayer.title.
Names the chart; use DeclarationBase.name to say which layer of it this is.
OptionalnameNames this layer among sibling layers. Maps to MaidrLayer.name.
Announced on a layer switch in place of the trace type, so a hue-split figure says "Male" and "Female" rather than "error_bar plot" twice.
TraceType.ALLUVIAL — the string 'alluvial'.
Categories that stay put while a quantity is re-divided between them at each step — an alluvial diagram.
The same weighted flow a sankey carries, drawn without a left-to-right budget, so it needs nothing declared beyond which of the two it is: the nodes, the links and their magnitudes are already in the drawing.