Help with explaining materialModification

[manic arch]

Hello, I stumbled upon this code on Cosmic Frontiers' GitHub:

GTCEuStartupEvents.materialModification(event => {
    TagPrefix.ingot['setIgnored(com.gregtechceu.gtceu.api.data.chemical.material.Material,java.util.function.Supplier[])'](GTMaterials.get('andesite_alloy'), () => Item.getItem('create:andesite_alloy')),
        TagPrefix.block['setIgnored(com.gregtechceu.gtceu.api.data.chemical.material.Material,java.util.function.Supplier[])'](GTMaterials.get('andesite_alloy'), () => Item.getItem('create:andesite_alloy_block')),
        TagPrefix.ingot['setIgnored(com.gregtechceu.gtceu.api.data.chemical.material.Material,java.util.function.Supplier[])'](GTMaterials.get('industrial_iron'), () => Item.getItem('createdeco:industrial_iron_ingot')),
        TagPrefix.block['setIgnored(com.gregtechceu.gtceu.api.data.chemical.material.Material,java.util.function.Supplier[])'](GTMaterials.get('industrial_iron'), () => Item.getItem('create:industrial_iron_block'))
})

I'd love if someone explained what one line does.
I assume it is either copying the tags of the items in the mods, or copying data, but I am not sure.
I also don't know if this is the right channel to ask this.

[polar parrot]

setIgnored stops GT from generating an item for that material

And replaces it what you specify

So in the first block, its replacing the GT Andesite Alloy Ingot with Create's andesite alloy

Same goes for vanilla iron ingot, gold ingot, blocks, etc.

[manic arch]

Ohhh, that makes sense now