TypeRepresentation:a.pythonTypeRepresentation
  PyFunctionTypeRepresentation
    PyParameterListRepresentation
      PsiElement(Py:LPAR)('(')
      PyReferenceExpression: int
        PsiElement(Py:IDENTIFIER)('int')
      PsiElement(Py:RPAR)(')')
    PsiWhiteSpace(' ')
    PsiElement(Py:RARROW)('->')
    PsiWhiteSpace(' ')