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Shebang ignored at beginning of first line
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#!/usr/bin/env groovy
hello
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(source_file
  (statement
    (expression
      (qualified_name
        (identifier)))))

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Shebang not ignored after first character
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 #!/usr/bin/env groovy
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(source_file
  (ERROR
    (UNEXPECTED '#'))
  (statement
    (expression
      (qualified_name
        (identifier))))
  (ERROR
    (UNEXPECTED '/')
    (identifier)
    (UNEXPECTED '/')
    (identifier)
    (identifier)))