REGEXP_FILE
  RegExpPatternImpl: <[a-e]?d\\e>
    RegExpBranchImpl: <[a-e]?d\\e>
      RegExpClosureImpl: <[a-e]?>
        RegExpClassImpl: <[a-e]>
          PsiElement(CLASS_BEGIN)('[')
          RegExpCharRangeImpl: <a-e>
            RegExpCharImpl: <a>
              PsiElement(CHARACTER)('a')
            PsiElement(MINUS)('-')
            RegExpCharImpl: <e>
              PsiElement(CHARACTER)('e')
          PsiElement(CLASS_END)(']')
        RegExpQuantifierImpl: <?>
          PsiElement(QUEST)('?')
      RegExpCharImpl: <d>
        PsiElement(CHARACTER)('d')
      RegExpCharImpl: <\\>
        PsiElement(ESC_CHARACTER)('\\')
      RegExpCharImpl: <e>
        PsiElement(CHARACTER)('e')