echo strict server when content-type is Text/plain

[elodieapiou]

This previous problem has created a new problem for echo strict #1132

I create an api response with a header and a "text/plain" content. When my api is generated with oapi-codegen, my response is malformed. Instead of creating a structure containing my header and content, it only creates a string.

i use the version v1.13.0, which is deprecated. From v1.13.1 to v2.2.0, api does not generate correctly.

Here is my code:

file openapi.yml, my response to be generated

What i want (generated with the version v1.13.0)

What i have (generated with the version v2.2.0)

I think the problem may be here : https://github.com/oapi-codegen/oapi-codegen/blob/v2.2.0/pkg/codegen/templates/strict/strict-interface.tmpl#L42

I'm blocked.

Thank you