PyFile:MissingFunctionNameAndThenParametersList.py
  PyFunction('null')
    PsiElement(Py:DEF_KEYWORD)('def')
    PsiErrorElement:Identifier expected
      <empty list>
    PsiWhiteSpace(' ')
    PyParameterList
      PsiElement(Py:LPAR)('(')
      PsiElement(Py:RPAR)(')')
    PsiElement(Py:COLON)(':')
    PsiWhiteSpace('\n    ')
    PyStatementList
      PyPassStatement
        PsiElement(Py:PASS_KEYWORD)('pass')