public StackResourceDrift withPropertyDifferences(PropertyDifference... propertyDifferences) {
        if (this.propertyDifferences == null) {
            setPropertyDifferences(new com.amazonaws.internal.SdkInternalList<PropertyDifference>(propertyDifferences.length));
        }
        for (PropertyDifference ele : propertyDifferences) {
            this.propertyDifferences.add(ele);
        }
        return this;
    }
<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>
<p>
<b>NOTE:</b> This method appends the values to the existing list (if any). Use
{@link #setPropertyDifferences(java.util.Collection)} or {@link #withPropertyDifferences(java.util.Collection)}
if you want to override the existing values.
</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>.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-cloudformation/src/main/java/com/amazonaws/services/cloudformation/model/StackResourceDrift.java