alias

        # Psych::Handler.alias

(from ruby core)
### Implementation from Handler
---
    alias(anchor)

---

Called when an alias is found to `anchor`.  `anchor` will be the name of
the anchor found.

### Example

Here we have an example of an array that references itself in YAML:

    --- &ponies
    - first element
    - *ponies

&ponies is the anchor, *ponies is the alias.  In this case, alias is
called with "ponies".