Mix.Generator.embed_text

You're seeing just the macro embed_text, go back to Mix.Generator module for more information.

embed_text(name, contents)

Embeds a text given by contents into the current module.

It will define a private function with the name followed by _text that expects no arguments.

defmodule Mix.Tasks.MyTask do
  require Mix.Generator
  Mix.Generator.embed_text(:error, "There was an error!")
end