StartupEvents.modifyCreativeTab

#Add items to tab, remove items from tab

StartupEvents.modifyCreativeTab('minecraft:redstone_blocks', event => {
	// Adds example item after redstone
	event.addAfter('minecraft:redstone', 'kubejs:example_item')
	// Removes redstone
	event.removeDisplay('minecraft:redstone');
})

#Change icon and display name of tab

StartupEvents.modifyCreativeTab('minecraft:functional_blocks', event => {
	// Change tab icon
	event.icon = 'kubejs:example_block'
	// Change display name. Technically supports formatting, but it's not recommended
	event.displayName = Text.darkRed('Functional Blocks!')
})

#Create a new tab and all dirt blocks to it

StartupEvents.registry('creative_mode_tab', event => {
	event.create('dirt').icon(() => 'minecraft:dirt').content(() => [
		'minecraft:dirt',
		'minecraft:grass_block',
		'minecraft:podzol',
		'minecraft:coarse_dirt',
		'minecraft:rooted_dirt'
	])
})