Refactor this method to reduce its Cognitive Complexity from 17 to the 15 allowed.

Refactoring a method with high cognitive complexity typically involves breaking down complex logic into simpler parts, improving variable and function names for better readability, and reorganizing the code structure. Here's a hypothetical example of how you might simplify a method:

原代码（假设是一个有17级认知复杂度的示例）：

public void processData(List<SomeObject> data, int threshold) {
    List<String> result = new ArrayList<>();
    for (SomeObject obj : data) {
        if (obj.getValue() > threshold && isDuplicate(obj)) {
            String uniqueKey = generateUniqueKey(obj);
            result.add(uniqueKey);
        }
    }
    // Additional complex conditions and operations...
}

简化后的代码（降低到15级的认知复杂度）：

private boolean isAboveThresholdAndNotDuplicate(SomeObject obj, int threshold) {
    return obj.getValue() > threshold && !isDuplicateInList(obj, result);
}

private String generateUniqueKey(SomeObject obj) {
    // ...implement or use a library to generate unique keys
}

public void processData(List<SomeObject> data, int threshold) {
    List<String> result = new ArrayList<>();
    for (SomeObject obj : data) {
        if (isAboveThresholdAndNotDuplicate(obj, threshold)) {
            result.add(generateUniqueKey(obj));
        }
    }
}

在这个例子中，我们把复杂的条件判断拆分为单独的方法，并减少了循环内的操作。这样可以提高代码的清晰度，并保持所需功能不变。