FunctionTypeComment:a.functionTypeComment
  PyFunctionTypeAnnotation
    PyParameterTypeList
      PsiElement(Py:LPAR)('(')
      PyStarExpression
        PsiElement(Py:MULT)('*')
        PyReferenceExpression: int
          PsiElement(Py:IDENTIFIER)('int')
      PsiElement(Py:COMMA)(',')
      PsiWhiteSpace(' ')
      PyDoubleStarExpression
        PsiElement(Py:EXP)('**')
        PyReferenceExpression: str
          PsiElement(Py:IDENTIFIER)('str')
      PsiElement(Py:RPAR)(')')
    PsiWhiteSpace(' ')
    PsiElement(Py:RARROW)('->')
    PsiWhiteSpace(' ')
    PyNoneLiteralExpression
      PsiElement(Py:NONE_KEYWORD)('None')