Base trait for transforming Any values into primitive types that are accepted by vega-lite.
Base trait for transforming Any values into primitive types that are accepted by vega-lite. Default implementation
does a pass through for primitives, converts dates to ISO8601, and uses toString for everything else.
Base trait for transforming Any values into primitive types that are accepted by vega-lite. Default implementation does a pass through for primitives, converts dates to ISO8601, and uses toString for everything else.