code: @Override
      public CacheCluster modifyCacheCluster(ModifyCacheClusterRequest request) {
          request = beforeClientExecution(request);
          return executeModifyCacheCluster(request);
      }
docs: <p>
  Modifies the settings for a cluster. You can use this operation to change one or more cluster configuration
  parameters by specifying the parameters and the new values.
  </p>
  
  @param modifyCacheClusterRequest
  Represents the input of a <code>ModifyCacheCluster</code> operation.
  @return Result of the ModifyCacheCluster operation returned by the service.
  @throws InvalidCacheClusterStateException
  The requested cluster is not in the <code>available</code> state.
  @throws InvalidCacheSecurityGroupStateException
  The current state of the cache security group does not allow deletion.
  @throws InsufficientCacheClusterCapacityException
  The requested cache node type is not available in the specified Availability Zone.
  @throws CacheClusterNotFoundException
  The requested cluster ID does not refer to an existing cluster.
  @throws NodeQuotaForClusterExceededException
  The request cannot be processed because it would exceed the allowed number of cache nodes in a single
  cluster.
  @throws NodeQuotaForCustomerExceededException
  The request cannot be processed because it would exceed the allowed number of cache nodes per customer.
  @throws CacheSecurityGroupNotFoundException
  The requested cache security group name does not refer to an existing cache security group.
  @throws CacheParameterGroupNotFoundException
  The requested cache parameter group name does not refer to an existing cache parameter group.
  @throws InvalidVPCNetworkStateException
  The VPC network is in an invalid state.
  @throws InvalidParameterValueException
  The value for a parameter is invalid.
  @throws InvalidParameterCombinationException
  Two or more incompatible parameters were specified.
  @sample AmazonElastiCache.ModifyCacheCluster
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/elasticache-2015-02-02/ModifyCacheCluster" target="_top">AWS
  API Documentation</a>