extending with yaml anchors

[reesew]

I can't use yaml's ability to extend objects defined earlier, I get an error only scalar map keys are allowed in RAML. Here's an example:

extendable: &extendable
  inherited: prop
extended:
  <<: *extendtable
  extra: prop0
items:
  - <<: *extendable
    extra: prop1
  - <<: *extendable
    extra: prop2

which should expand to

...
extended:
  inherited: prop
  extra: prop0
items:
  - inherited: prop
    extra: prop1
  - inherited: prop
    extra: prop2

Is it really true that only scalar map keys are allowed for RAML? Or is it just that the parser doesn't know how to handle the <<: key? (I am not even sure whether << is a scalar or not)

[sichvoge]

Only scalar map keys are allowed afaik.

[reesew]

ok, but the <<: *foo functionality is valid yaml, so, is there a way to get that fixed?