code: @Override
      public ModifyClusterParameterGroupResult modifyClusterParameterGroup(ModifyClusterParameterGroupRequest request) {
          request = beforeClientExecution(request);
          return executeModifyClusterParameterGroup(request);
      }
docs: <p>
  Modifies the parameters of a parameter group.
  </p>
  <p>
  For more information about parameters and parameter groups, go to <a
  href="https://docs.aws.amazon.com/redshift/latest/mgmt/working-with-parameter-groups.html">Amazon Redshift
  Parameter Groups</a> in the <i>Amazon Redshift Cluster Management Guide</i>.
  </p>
  
  @param modifyClusterParameterGroupRequest
  @return Result of the ModifyClusterParameterGroup operation returned by the service.
  @throws ClusterParameterGroupNotFoundException
  The parameter group name does not refer to an existing parameter group.
  @throws InvalidClusterParameterGroupStateException
  The cluster parameter group action can not be completed because another task is in progress that involves
  the parameter group. Wait a few moments and try the operation again.
  @sample AmazonRedshift.ModifyClusterParameterGroup
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/redshift-2012-12-01/ModifyClusterParameterGroup"
  target="_top">AWS API Documentation</a>