Registering mapping for child properties

I'm currently trying to use the automapper to solve this problem:

I have multiple objects to map, and I have multiple `\DateTime` properties in those; I would like to map all of those to the same format\DTO. I have set up everything correctly, but every time that a source object has a `\DateTime` property, I'm forced to call `->forMember('field', Operation::mapTo(DateTimeDto))`.

Is there any way to map that just once and for all?

Start by reviewing the mapping configuration represented by forMember and Operation::mapTo(DateTimeDto), focusing on how repeated DateTime properties are currently registered. Determine the intended project-wide behavior and define what would demonstrate that multiple source objects map their DateTime properties without separate per-field configuration.

Written by the indexing model from the issue text.