Add empty check before call "iterator().next()" #232
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…pty. Add a empty check before calling 'iterator().next()' to avoid potential NullPointerExceptions or unexpected behavior.
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Before call next(), I couldn't find any code logic that ensures the 'getRealms()' is not empty.
Add a empty check before calling 'iterator().next()' to avoid potential NullPointerExceptions or unexpected behavior.