Information about the other one of Eggmove's parents

This article is written in a translator, so it can be difficult to understand.

I found an egg tag on the move-learn-method.
And I've seen that the actor of a particular Pokémon appears as below in the list of skills.

"version_group_details": [
{
"level_learned_at": 0,
"move_learn_method": {
"name": "egg",
"url": "https://pokeapi.co/api/v2/move-learn-method/2/"
},
"version_group": {
"name": "gold-silver",
"url": "https://pokeapi.co/api/v2/version-group/3/"
}

However, I knew that the technique was learned by crossing, but I didn't know which Pokémon to cross.
Does the api have any list information for opposing pokemon needed to learn mating skills?

What I'm curious about is that it's not registered in the api information?
Or is it something I didn't find?

If it's not registered, I hope it's added and if it's something I haven't found, please let me know how to check.

Start by comparing the reported version_group_details and move-learn-method/2/ API resources with the existing Pokémon move data; no repository file or test is named in the issue. Determine whether breeding partners are represented and how the API should expose them, then verify that the resulting response answers which Pokémon can supply the egg move.