Issue trying to export an image used in an extension

I am trying to create an extension for supporting some very simple materials like spheerical mapping. The material has some parameters and an image and in Blender is implemented a ShaderNodeCustomGroup.

For exporting this material, I am looking for the socket where the ImageTexture node is connected and I use the gather_texture_info function which is used for other textures in the standard material. This function returns a gltf2_io.TextureInfo

However, when I add this object to my extension definition, I get an error “TextureInfo is not JSON serializable” although is used several times accross the code.

texture_info = self.gather_texture_info((env_socket,), export_settings)
gltf2_material.extensions[bl_info['name']] = self.Extension(
      name=bl_info['name'],
      extension={"img": texture_info},
      required=False
)

How should I add the texture info so It works?

[scurest]

@emackey This was closed by #849.

[emackey]

Thanks @scurest and @jjcasmar