(a.b.c.d.e.F) x
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Groovy script
  Typecast expression
    PsiElement(()('(')
    Type element
      Reference element
        Reference element
          Reference element
            Reference element
              Reference element
                Reference element
                  PsiElement(identifier)('a')
                PsiElement(.)('.')
                PsiElement(identifier)('b')
              PsiElement(.)('.')
              PsiElement(identifier)('c')
            PsiElement(.)('.')
            PsiElement(identifier)('d')
          PsiElement(.)('.')
          PsiElement(identifier)('e')
        PsiElement(.)('.')
        PsiElement(identifier)('F')
    PsiElement())(')')
    PsiWhiteSpace(' ')
    Reference expression
      PsiElement(identifier)('x')