public void setPropertyDifferences(java.util.Collection<PropertyDifference> propertyDifferences) {
        if (propertyDifferences == null) {
            this.propertyDifferences = null;
            return;
        }

        this.propertyDifferences = new com.amazonaws.internal.SdkInternalList<PropertyDifference>(propertyDifferences);
    }
<p>
A collection of the resource properties whose actual values differ from their expected values. These will be
present only for resources whose <code>StackResourceDriftStatus</code> is <code>MODIFIED</code>.
</p>

@param propertyDifferences
       A collection of the resource properties whose actual values differ from their expected values. These will
       be present only for resources whose <code>StackResourceDriftStatus</code> is <code>MODIFIED</code>.
aws-java-sdk-cloudformation/src/main/java/com/amazonaws/services/cloudformation/model/StackResourceDrift.java