Liberator.Resource.processable-question-mark

You're seeing just the callback processable-question-mark, go back to Liberator.Resource module for more information.
Link to this callback

processable?(arg1)

View Source (since 1.0)

Specs

processable?(Plug.Conn.t()) :: true | false

Check if the body of the request can be processed.

This is a good place to parse a JSON body if that's what you're doing. Returning false here would cause the plug to return a 422 Unprocessable response.