@ ProgramNode (location: (1,0)-(4,11))
├── locals: []
└── statements:
    @ StatementsNode (location: (1,0)-(4,11))
    └── body: (length: 1)
        └── @ ArrayNode (location: (1,0)-(4,11))
            ├── flags: ∅
            ├── elements: (length: 5)
            │   ├── @ StringNode (location: (1,4)-(1,5))
            │   │   ├── flags: ∅
            │   │   ├── opening_loc: ∅
            │   │   ├── content_loc: (1,4)-(1,5) = "1"
            │   │   ├── closing_loc: ∅
            │   │   └── unescaped: "1"
            │   ├── @ InterpolatedStringNode (location: (1,6)-(1,12))
            │   │   ├── flags: ∅
            │   │   ├── opening_loc: ∅
            │   │   ├── parts: (length: 1)
            │   │   │   └── @ EmbeddedStatementsNode (location: (1,6)-(1,12))
            │   │   │       ├── opening_loc: (1,6)-(1,8) = "\#{"
            │   │   │       ├── statements:
            │   │   │       │   @ StatementsNode (location: (1,8)-(1,11))
            │   │   │       │   └── body: (length: 1)
            │   │   │       │       └── @ StringNode (location: (1,8)-(1,11))
            │   │   │       │           ├── flags: ∅
            │   │   │       │           ├── opening_loc: (1,8)-(1,11) = "<<A"
            │   │   │       │           ├── content_loc: (2,0)-(3,0) = "2\n"
            │   │   │       │           ├── closing_loc: (3,0)-(4,0) = "A\n"
            │   │   │       │           └── unescaped: "2\n"
            │   │   │       └── closing_loc: (1,11)-(1,12) = "}"
            │   │   └── closing_loc: ∅
            │   ├── @ StringNode (location: (1,13)-(1,14))
            │   │   ├── flags: ∅
            │   │   ├── opening_loc: ∅
            │   │   ├── content_loc: (1,13)-(1,14) = "3"
            │   │   ├── closing_loc: ∅
            │   │   └── unescaped: "3"
            │   ├── @ StringNode (location: (4,6)-(4,7))
            │   │   ├── flags: ∅
            │   │   ├── opening_loc: ∅
            │   │   ├── content_loc: (4,6)-(4,7) = "4"
            │   │   ├── closing_loc: ∅
            │   │   └── unescaped: "4"
            │   └── @ StringNode (location: (4,8)-(4,9))
            │       ├── flags: ∅
            │       ├── opening_loc: ∅
            │       ├── content_loc: (4,8)-(4,9) = "5"
            │       ├── closing_loc: ∅
            │       └── unescaped: "5"
            ├── opening_loc: (1,0)-(1,3) = "%W("
            └── closing_loc: (4,10)-(4,11) = ")"