## Wildcard cannot be used as single match case

```catala
declaration enumeration E:
  -- Case1
  -- Case2

declaration scope A:
  context x content E
  context y content integer

scope A:
  definition x equals Case1
  definition y equals match x with pattern
    -- anything : 31
```

```catala-test-inline
$ catala Interpret -s A
[ERROR] Couldn't infer the enumeration name from lonely wildcard (wildcard cannot be used as single match case)

┌─⯈ tests/test_enum/bad/ambiguous_wildcard.catala_en:15.5-15.21:
└──┐
15 │     -- anything : 31
   │     ‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾
   └─ Wildcard cannot be used as single match case
#return code 255#
```