smth.lua

{
  {
    {"fun_1", {args ...}},
    {"fun_2", {args ...}},
    {"fun_3", {args ...}}
  },
  {
    {"fun_1", {args ...}}, -- params
    {"fun_2", {args ...}},
    {"fun_3", {args ...}}
  },
  ...
}

{
  "sequence" = {"fun_1", "fun_2", "fun_3" ...},
  "args" = {
    -- step 1 args
    {
      {a1, a2, ...}, -- fun_1
      {a1, a2, ...}, -- fun_2
      {a1, a2, ...}, -- fun_3
    },
    -- step 2 args
    {
      {a1, a2, ...}, -- fun_1
      {a1, a2, ...}, -- fun_2
      {a1, a2, ...}, -- fun_3
    },
    ...
  }

local fun = params[1] -- "fun_1"
local argz = params[2] -- {args ...}

helper.cached[fun](unpack(argz))