//Set icon item
setIcon("minecraft:netherrack")

//Set title String
setTitle("Netherrack for...reasons.")

//Set description String
setDescription("Gonna need some Netherrack for various nefarious reasons.")

//Set the parent advancement. The syntax is "modid:folder/path/to/the/advancement/then/filename"
setParent("triumph:betterwithmods/nether")

//Adds criteria named "brokeIron" with the trigger type "triumph:player_break_block". This function returns the criteria as an object
criteria = addCriteria("brokeNether", "triumph:player_break_block")

//Sets the required block ore dict for the criteria. A block from this ore dict needs to be broken by the player.
criteria.setBlock("minecraft:netherrack")