DSL EXPRESSION:
1 ? 2 : 3


AST:
"block" [tt:block] [nt:StatementBlock]
    "?" [tt:op_ternary] [nt:BareBoolean]
        "?" [tt:op_ternary] [nt:Operator]
            "1" [tt:int_literal] [nt:int_literal]
            "2" [tt:int_literal] [nt:int_literal]
            "3" [tt:int_literal] [nt:int_literal]

