# `Dialyxir.Warnings.CallbackInfoMissing`
[🔗](https://github.com/jeremyjh/dialyxir/blob/1.4.8/lib/dialyxir/warnings/callback_info_missing.ex#L1)

The module is using a behaviour that does not exist or is not a
behaviour. This is also a compiler warning.

## Example

    defmodule Example do
      @behaviour BehaviourThatDoesNotExist

      def ok() do
        :ok
      end
    end

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*Consult [api-reference.md](api-reference.md) for complete listing*