PyFile:TypeVarTypeParameterDefaultMissingExpression.py
  PyClass: Foo
    PsiElement(Py:CLASS_KEYWORD)('class')
    PsiWhiteSpace(' ')
    PsiElement(Py:IDENTIFIER)('Foo')
    PyTypeParameterList
      PsiElement(Py:LBRACKET)('[')
      PyTypeParameter
        PsiElement(Py:IDENTIFIER)('T')
        PsiWhiteSpace(' ')
        PsiElement(Py:EQ)('=')
        PsiErrorElement:Expression expected
          <empty list>
      PsiWhiteSpace(' ')
      PsiElement(Py:RBRACKET)(']')
    PyArgumentList
      <empty list>
    PsiElement(Py:COLON)(':')
    PsiWhiteSpace(' ')
    PyStatementList
      PyExpressionStatement
        PyEllipsisLiteralExpression
          PsiElement(Py:DOT)('.')
          PsiElement(Py:DOT)('.')
          PsiElement(Py:DOT)('.')