public void setPillarDifferences(java.util.Collection<PillarDifference> pillarDifferences) {
        if (pillarDifferences == null) {
            this.pillarDifferences = null;
            return;
        }

        this.pillarDifferences = new java.util.ArrayList<PillarDifference>(pillarDifferences);
    }
<p>
The differences between the base and latest versions of the lens.
</p>

@param pillarDifferences
       The differences between the base and latest versions of the lens.
aws-java-sdk-wellarchitected/src/main/java/com/amazonaws/services/wellarchitected/model/VersionDifferences.java