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How does OpenClover count branches?

I have a class:

public class Branches {
    public double justOneIf(int a) {
        double result;
        if (a > 0) {            result = 1.0d;
        } else {            result = -1.0d;
        }
        return result;
    }

    public String switches(int x) {
        String result;
        switch (x) {
            case 0: {                result = "zero";
                break;
            }
            case 1: {                result = "one";
                break;
            }
            case 2: {                result = "two";
                break;
            }
            default: {                result = "kill all humans";
            }
        }
        return result;
    }

    public int deepIf(int x) {
        int y;
        if (x == 0) {            y = 1;
        } else {
            if (x > 0) {                y = 2;
            } else {                y = 3;
            }
        }
        return y;
    }
}

In OpenClover (version 4.4.1) report I got metrics for this class:

Code metricsBranches:6
...

Why just six branches here? How does clover count it?

 

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