Example
defmodule MyConnection do
@behaviour Late
@impl true
def init(_args) do
{:ok, %{from: nil}}
end
@impl true
def handle_call({:something, query}, from, state) do
{:noreply, stuff}
end
@impl true
def handle_in({:text, text}, state) do
{:reply, [frame], new_state}
end
end