(script
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    (heredoc
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        (selection_expression
          (selection_expression
            (variable)
            (qualified_identifier
              (identifier)))
          (qualified_identifier
            (identifier))))
      (embedded_braced_expression
        (selection_expression
          (call_expression
            function: (selection_expression
              (variable)
              (qualified_identifier
                (identifier)))
            (arguments))
          (qualified_identifier
            (identifier))))
      (embedded_braced_expression
        (call_expression
          function: (selection_expression
            (selection_expression
              (variable)
              (qualified_identifier
                (identifier)))
            (qualified_identifier
              (identifier)))
          (arguments)))
      (embedded_braced_expression
        (selection_expression
          (subscript_expression
            (selection_expression
              (variable)
              (qualified_identifier
                (identifier)))
            (string))
          (qualified_identifier
            (identifier))))
      (embedded_braced_expression
        (subscript_expression
          (selection_expression
            (selection_expression
              (variable)
              (qualified_identifier
                (identifier)))
            (qualified_identifier
              (identifier)))
          (string))))))