Drupal: Check If field exists on node and perform action?

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Check If field exists on node and perform action?
I hope you found a solution that worked for you :)
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Thanks to all those great people for their contributions!

(drupal.stackexchange.com/users/46625/sam)Sam
(drupal.stackexchange.com/users/47547/4uk4)4uk4
A special thanks goes out to the (https://drupal.stackexchange.com/questions/318300/check-if-field-exists-on-node-and-perform-action)Stackexchange community

I wish you all a wonderful day! Stay safe :)
If anything is off, please write me at peter D.O.T schneider A.T ois42.de

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