I have defined a module GS where genserver will be used and I need to create tables. I have the whole logic of the program In another module named base. How do I inherit handle_call in my genserver GS module ?

GS MODULE:

defmodule GS do
  use GenServer
  @name gen
  # client
  def start_link(opts \\ []) do
    GenServer.start_link(__MODULE__, [], opts ++ [name: gen])
  end

  def creating_tables(tables_list) do
    GenServer.call(@name, {:creating_tables, tables_list})
  end

  # server
  def init(initial_state) do
    {:ok, initial_state}
  end
end

BASE MODULE

defmodule Base do
  def handle_call({:creating_tables}, _from, state_tables_list) do
    tables = Enum.map(state_tables_list, fn table -> create(table) end)
    {:reply, tables, state_tables_list}
  end

  defp create(table) do
    try do
      :ets.new(table, [:named_table, :bag])
    rescue
      ArgumentError -> table
    end
  end
end