REGEXP_FILE
  RegExpPatternImpl: <[\x4a-\x3f]>
    RegExpBranchImpl: <[\x4a-\x3f]>
      RegExpClassImpl: <[\x4a-\x3f]>
        PsiElement(CLASS_BEGIN)('[')
        RegExpCharRangeImpl: <\x4a-\x3f>
          RegExpCharImpl: <\x4a>
            PsiElement(HEX_CHAR)('\x4a')
          PsiElement(MINUS)('-')
          RegExpCharImpl: <\x3f>
            PsiElement(HEX_CHAR)('\x3f')
        PsiElement(CLASS_END)(']')