Yaml: Does not support "inherited" structs

Given these stucts:

    type Path struct {
        Description string
        Paths       map[string]Path
    }

    type Top struct {
        Title       string
        Path
    }

I should be able to unmarshal a YAML like this:

  title: Recursive
  paths:
    a:
      paths:
        b:
          paths:
            c:
              description: Bottom

This works but should be the same thing as above:

    type Path struct {
        Description string
        Paths       map[string]Path
    }

    type Top struct {
        Title       string
        Paths    map[string]Path
    }