wk.register({
  f = {
    name = "file", -- optional group name
    f = { "<cmd>Telescope find_files<cr>", "Find File" }, -- create a binding with label
    r = { "<cmd>Telescope oldfiles<cr>", "Open Recent File", noremap=false, buffer = 123 }, -- additional options for creating the keymap
    n = { "New File" }, -- just a label. don't create any mapping
    e = "Edit File", -- same as above
    ["1"] = "which_key_ignore",  -- special label to hide it in the popup
    b = { function() print("bar") end, "Foobar" } -- you can also pass functions!
  },
}, { prefix = "<leader>" })

-- If you use whichkey.register with an alias eg wk.register
        ["wk.register"] = {
            method = "which_key",
        },