Detect full blocks procedure

A procedure to detect if the block at X Y S is a full block or not.

Examples of full blocks: Dirt, Grass, Snow block, Wooden Planks, Osmium block, Diamond block, podzol, stone, pumpkin, ect

Examples of blocks that aren't full: Tall grass, Snow layer, Slabs, Chests, Fences, Air, Water, Saplings, flowers, pumpkinstem, ect

I think this is an incredibly important thing to add and would be very useful.