test/prism/snapshots/whitequark/back_ref.txt


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@ ProgramNode (location: (1,0)-(1,2))
├── locals: []
└── statements:
    @ StatementsNode (location: (1,0)-(1,2))
    └── body: (length: 1)
        └── @ BackReferenceReadNode (location: (1,0)-(1,2))
            └── name: :$+