public FindingStatistics clearCountBySeverityEntries() {
        this.countBySeverity = null;
        return this;
    }
Removes all the entries added into CountBySeverity.

@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-guardduty/src/main/java/com/amazonaws/services/guardduty/model/FindingStatistics.java