PyStringLiteralExpression (@NotNull PyDocStringOwner owner) { final PyStringLiteralExpression expression = owner.getDocStringExpression(); if (expression != null) { return expression; } final PsiElement original = PyiUtil.getOriginalElement(owner); final PyDocStringOwner originalOwner = as(original, PyDocStringOwner.class); return originalOwner != null ? originalOwner.getDocStringExpression() : null; }