REGEXP_FILE
  RegExpPatternImpl: <[\x4a-\x4b]>
    RegExpBranchImpl: <[\x4a-\x4b]>
      RegExpClassImpl: <[\x4a-\x4b]>
        PsiElement(CLASS_BEGIN)('[')
        RegExpCharRangeImpl: <\x4a-\x4b>
          RegExpCharImpl: <\x4a>
            PsiElement(HEX_CHAR)('\x4a')
          PsiElement(MINUS)('-')
          RegExpCharImpl: <\x4b>
            PsiElement(HEX_CHAR)('\x4b')
        PsiElement(CLASS_END)(']')