Notes
In Apex, removeAll(listOfElementsToRemove)
method removes the elements in the specified list from the set if they are present.
Here's an example of how you can remove all occurrences of specific elements from a list:
Set<String> stringSet = new Set<String>{'apple', 'banana', 'cherry', 'apple', 'orange', 'apple'};
List<String> elementsToRemove = new List<String>{'apple', 'orange'};
stringSet.removeAll(elementsToRemove);
System.debug('Set after removal: ' + stringSet);
Output: List after removal: {banana, cherry}
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