public java.util.List<CacheParameterGroup> getCacheParameterGroups() {
        if (cacheParameterGroups == null) {
            cacheParameterGroups = new com.amazonaws.internal.SdkInternalList<CacheParameterGroup>();
        }
        return cacheParameterGroups;
    }
<p>
A list of cache parameter groups. Each element in the list contains detailed information about one cache
parameter group.
</p>

@return A list of cache parameter groups. Each element in the list contains detailed information about one cache
        parameter group.
aws-java-sdk-elasticache/src/main/java/com/amazonaws/services/elasticache/model/DescribeCacheParameterGroupsResult.java