Currently generated code may try to write the header multiple times.
The generated execute call should not call WriteHeader or mutate the Header when the handler receives the a ResponseWriter.
Given the static receiver has a non-string basic type
And there is a template named GET / F(response)Whenmuxt generate is invoked
Then the generated function literal should not invoke execute and should just write the template bytes, if template execution fails do not write the response just return
Currently generated code may try to write the header multiple times.
The generated execute call should not call WriteHeader or mutate the Header when the handler receives the a ResponseWriter.