Description
Material inheritance allows you to base materials of other materials, copying all things abt them.
Example
{"parent": "miapi:metal/iron","data": {"mining_speed": 0,"mining_level": "minecraft:incorrect_for_diamond_tool","items": [{"item": "minecraft:blue_ice","value": 0.1}]}}
This example uses extends iron and increases its mining level to diamond and adding blue ice as ingredient.