PyFile:Annotations.py
  PyFunction('f')
    PsiElement(Py:DEF_KEYWORD)('def')
    PsiWhiteSpace(' ')
    PsiElement(Py:IDENTIFIER)('f')
    PyParameterList
      PsiElement(Py:LPAR)('(')
      PyNamedParameter('a')
        PsiElement(Py:IDENTIFIER)('a')
        PyAnnotation
          PsiElement(Py:COLON)(':')
          PyNumericLiteralExpression
            PsiElement(Py:INTEGER_LITERAL)('1')
      PsiElement(Py:RPAR)(')')
    PsiWhiteSpace(' ')
    PyAnnotation
      PsiElement(Py:RARROW)('->')
      PsiWhiteSpace(' ')
      PyReferenceExpression: list
        PsiElement(Py:IDENTIFIER)('list')
    PsiElement(Py:COLON)(':')
    PsiWhiteSpace(' ')
    PyStatementList
      PyPassStatement
        PsiElement(Py:PASS_KEYWORD)('pass')