How to install mods for minecraft forge 1.12

PetCraft Mod 1, how to install mods for minecraft forge 1.12.2. Once that is imported, we need to create a new function that will run specific code to register the sword Item in Minecraft. Once you have it saved, right click on the picture wherever it is saved on your computer and then copy it. Right click and copy and paste the unzipped forge ... ................
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