Is this question too similar to another to ask? How should I handle a situation like this?

Question

I asked this question: How to check if an entity bundle has a field?, but soon realized there was another very similar question: Get all fields defined in a bundle. I ended up answering my own question, referencing the other, but added additional steps to check that a specific field existed vs just getting a list of all fields. Was this the correct way to go? Should I have deleted my question instead? What's really giving me pause is that I would not have asked the question to begin with if I had found the linked question / answer before I asked.

The answer for Is it bad form to ask questions about problems I don't have? seems to indicate that I've handled this situation correctly.

Answer 1

Is it bad form to ask questions about problems I don't have? is answering about those problems resolved before asking any question, not asking a question that has been already asked or is very close to another question.
In short that question is asking I resolved many problems when developing Drupal code, and I think that some of them could be helpful to other users with the same problem. Is it fine if I post a question for a problem I resolved to which I add an answer to share what I did?

Don't take that answer as suggestion that asking a question that has been already answered is perfectly fine to do in any case.