foo_handler.erl

-module(foo_handler).

-callback handle_message(binary(), map()) ->
    ok | {ok, term()} | {error, term()}.

-export([validate_and_handle/2]).

-spec validate_and_handle(atom(), binary()) ->
                                 ok | {ok, term()} | {error, term()}.
validate_and_handle(Module, Message) ->
    case foo:validate(Message) of
        {ok, Data} ->
            Module:handle_message(Data);
        Error ->
            Error
    end.

elvis would complain with

src/foo_handler.erl [FAIL]

• invalid_dynamic_call
  • Remove the dynamic function call on line 13. Only modules that define callbacks should make dynamic calls.