How to specify a property placeholder that references a YAML list in Spring configuration?

Question

I use property placeholders to "inject" values into other properties in my YAML config files. Like this:

a:
  b: Hello
  c: 123
  d:
  - One
  - Two
  - Three
x:
  y: ${a.b} There
  

This works well, the value of x.y is resolved as Hello There.

Now I want to reference the entire list a.d, but this does not work:

x:
  z: The list is ${a.d}

Spring complains, saying:

Could not resolve placeholder 'a.d' ...

I suspect I can reference individual elements in the a.d list, like a.d[0] but I want the entire list. Is that possible?