https://developers.arcgis.com/kotlin/api-reference/arcgis-maps-kotlin/com.arcgismaps.arcade/-arcade-expression-return-type/index.html
ArcadeExpressionReturnType
https://developers.arcgis.com/net/api-reference/api/netwin/Esri.ArcGISRuntime/Esri.ArcGISRuntime.ArcadeExpressionReturnType.html
Enum ArcadeExpressionReturnType
The expected type of the result calculated by an expression described within an
enum