refactor: RESTManager handlers to use collection (#2539)
refactor: RESTManager handlers to use collection (#2539)


appellation/discord.js,SpaceEEC/discord.js,Lewdcario/discord.js,appellation/discord.js,Lewdcario/discord.js,SpaceEEC/discord.js,Lewdcario/discord.js,hydrabolt/discord.js,hydrabolt/discord.js,hydrabolt/discord.js,SpaceEEC/discord.js,appellation/discord.js