YAML declarations in SchemaProps struct 

This code won't work because type SchemaProps struct does not have yaml declarations, why?

	schema := new(spec.Schema)
	errYamlUnmarshal := yaml.Unmarshal(yamlBytes, schema)
	if errYamlUnmarshal != nil {
		return errYamlUnmarshal
	}

I'm working with example https://pkg.go.dev/github.com/go-openapi/validate#example-AgainstSchema
And cannot load yaml file.