REGEXP_FILE
  RegExpPatternImpl: <\((.*), (.*)\)>
    RegExpBranchImpl: <\((.*), (.*)\)>
      RegExpCharImpl: <\(>
        PsiElement(ESC_CHARACTER)('\(')
      RegExpGroupImpl: <(.*)>
        PsiElement(GROUP_BEGIN)('(')
        RegExpPatternImpl: <.*>
          RegExpBranchImpl: <.*>
            RegExpClosureImpl: <.*>
              RegExpSimpleClassImpl: <.>
                PsiElement(DOT)('.')
              RegExpQuantifierImpl: <*>
                PsiElement(STAR)('*')
        PsiElement(GROUP_END)(')')
      RegExpCharImpl: <,>
        PsiElement(CHARACTER)(',')
      RegExpCharImpl: < >
        PsiElement(CHARACTER)(' ')
      RegExpGroupImpl: <(.*)>
        PsiElement(GROUP_BEGIN)('(')
        RegExpPatternImpl: <.*>
          RegExpBranchImpl: <.*>
            RegExpClosureImpl: <.*>
              RegExpSimpleClassImpl: <.>
                PsiElement(DOT)('.')
              RegExpQuantifierImpl: <*>
                PsiElement(STAR)('*')
        PsiElement(GROUP_END)(')')
      RegExpCharImpl: <\)>
        PsiElement(ESC_CHARACTER)('\)')