I want to avoid Collections$UnmodifiableCollection

Hi,
I am creating a program like below,
but I do not know that it is a bug until imList.remove(s) is executed.
Is there a way to analyze such code statically in IntelliJ?
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List<String> imList = Collections.unmodifiableList(list);
for (String s : imList)
if (s.startsWith("c"))
imList.remove(s);