Ability to choose a seperate item for taming, breeding, and feeding mobs

Let us pick different items for Taming, Feeding, and Breeding mobs. Right now one item serves the purpose of all 3 functions, being allocated to the variable "isFood" in the entity file. This could be split into "isTamingItem" "isBreedingFood" and "isHealingFood". For example, i want to make a collar that can be used to tame a mob, but given that the collar would also function as food, its not something i can really accomplish without locking the code.