Entity UUID precedure blocks

just saw that the github is no longer accepting feature requests. i understand what with the whole project coming to a close. Maybe the people working on the forks could add this.

A feature I would like is new procedure blocks relating to entity and player UUIDs. The 3 that I can think of are:

• "get uuid of entity" that accepts a entity or player as a parameter and returns a string that is the uuid.
• "get entity with uuid ___" that accepts a string as a parameter and returns the entity.
• "if entity with uuid ___ exists" accepts a string as a parameter and returns a boolean of true if the entity does exist or false if it does not

This can be good for when one needs to:

• Save an entity id for use later.
• Pass the uuid to a vanilla minecraft command
• Save a player id in such a way that will still work even if the player changes their username