SHELL_SCRIPT
  COMMANDS_LIST
    GENERIC_COMMAND_DIRECTIVE
      LITERAL
        PsiElement(word)('b')
    PsiWhiteSpace(' ')
    PsiElement(&)('&')
    PsiWhiteSpace(' ')
    GENERIC_COMMAND_DIRECTIVE
      HEREDOC
        PsiElement(HEREDOC_MARKER_TAG)('<<')
        PsiWhiteSpace(' ')
        PsiElement(HEREDOC_MARKER_START)('EOF')
        PsiElement(\n)('\n')
        PsiElement(HEREDOC_CONTENT)(' content\n')
        PsiElement(HEREDOC_MARKER_END)('EOF')