Clarification on `NewMap` and `NewList` in `<actions>` of XML Services

Technical Questions
1

Hi everyone,

I noticed NewMap and NewList types in the <actions> tag for XML services (common-types-3.xsd#L75)

I’m trying to understand their actual use cases. I couldn’t find any implementation that handles them — I checked basicConvert and MClassLoader.commonJavaClassesMap but didn’t find any related logic.

Could someone please shed light on the intended use cases for NewMap and NewList in service actions?