REGEXP_FILE
  RegExpPatternImpl: <a[b&&c&&d-e&&f]>
    RegExpBranchImpl: <a[b&&c&&d-e&&f]>
      RegExpCharImpl: <a>
        PsiElement(CHARACTER)('a')
      RegExpClassImpl: <[b&&c&&d-e&&f]>
        PsiElement(CLASS_BEGIN)('[')
        RegExpIntersectionImpl: <b&&c&&d-e&&f>
          RegExpCharImpl: <b>
            PsiElement(CHARACTER)('b')
          PsiElement(ANDAND)('&&')
          RegExpCharImpl: <c>
            PsiElement(CHARACTER)('c')
          PsiElement(ANDAND)('&&')
          RegExpCharRangeImpl: <d-e>
            RegExpCharImpl: <d>
              PsiElement(CHARACTER)('d')
            PsiElement(MINUS)('-')
            RegExpCharImpl: <e>
              PsiElement(CHARACTER)('e')
          PsiElement(ANDAND)('&&')
          RegExpCharImpl: <f>
            PsiElement(CHARACTER)('f')
        PsiElement(CLASS_END)(']')