MJRLegends Lib Mod 1.12.2/1.11.2/1.10.2 is an extremely useful mod library used to run other MJRLeosystem mods. Therefore, if you are using other mods of the same author, there is no reason for you to ignore this support mod.
About MJRLegends Lib mod
As you know, API and library mods usually appear in the required section before you download other mods. This mod will be able to save the size of the files as well as support other mods at the same time.
Obviously, this library mod will not provide any effects when installed separately in the game. Instead of adding new content, the mod provides documentation as well as a set of codes used by other mods of the creator.
You must note that you have to install the main mod first for the other mods to run. If the core mod isn’t available, the game will crash and you won’t be able to load it into the main menu.
MJRLegends Lib mod requires you to have Minecraft Forge installed before running.