public void setSummaries(java.util.Collection<StackInstanceResourceDriftsSummary> summaries) {
        if (summaries == null) {
            this.summaries = null;
            return;
        }

        this.summaries = new com.amazonaws.internal.SdkInternalList<StackInstanceResourceDriftsSummary>(summaries);
    }
<p>
A list of <code>StackInstanceResourceDriftsSummary</code> structures that contain information about the specified
stack instances.
</p>

@param summaries
       A list of <code>StackInstanceResourceDriftsSummary</code> structures that contain information about the
       specified stack instances.
aws-java-sdk-cloudformation/src/main/java/com/amazonaws/services/cloudformation/model/ListStackInstanceResourceDriftsResult.java