Duplicate getters and setters

[maciej-laskowski]

Hi, thank you for maintaining this extension. Have you considered checking for duplicates before inserting getters and setters and then inserting only those that are missing?

[cvergne]

Hi, no but that's a good idea :)
I'll take a look when I'll have time for, but if you or anyone want to submit a PR about that, feel free to do it !

[ctf0]

i will handle this