REGEXP_FILE
  RegExpPatternImpl: <\p{InLATIN_1_SUPPLEMENT}>
    RegExpBranchImpl: <\p{InLATIN_1_SUPPLEMENT}>
      RegExpPropertyImpl: <\p{InLATIN_1_SUPPLEMENT}>
        PsiElement(PROPERTY)('\p')
        PsiElement(LBRACE)('{')
        PsiElement(NAME)('InLATIN_1_SUPPLEMENT')
        PsiElement(RBRACE)('}')