code: public void setCacheParameterGroups(java.util.Collection<CacheParameterGroup> cacheParameterGroups) {
          if (cacheParameterGroups == null) {
              this.cacheParameterGroups = null;
              return;
          }
  
          this.cacheParameterGroups = new com.amazonaws.internal.SdkInternalList<CacheParameterGroup>(cacheParameterGroups);
      }
docs: <p>
  A list of cache parameter groups. Each element in the list contains detailed information about one cache
  parameter group.
  </p>
  
  @param cacheParameterGroups
  A list of cache parameter groups. Each element in the list contains detailed information about one cache
  parameter group.