@Override
    public DescribeMatchmakingConfigurationsResult describeMatchmakingConfigurations(DescribeMatchmakingConfigurationsRequest request) {
        request = beforeClientExecution(request);
        return executeDescribeMatchmakingConfigurations(request);
    }
<p>
Retrieves the details of FlexMatch matchmaking configurations.
</p>
<p>
This operation offers the following options: (1) retrieve all matchmaking configurations, (2) retrieve
configurations for a specified list, or (3) retrieve all configurations that use a specified rule set name. When
requesting multiple items, use the pagination parameters to retrieve results as a set of sequential pages.
</p>
<p>
If successful, a configuration is returned for each requested name. When specifying a list of names, only
configurations that currently exist are returned.
</p>
<p>
<b>Learn more</b>
</p>
<p>
<a href="https://docs.aws.amazon.com/gamelift/latest/flexmatchguide/matchmaker-build.html"> Setting up FlexMatch
matchmakers</a>
</p>

@param describeMatchmakingConfigurationsRequest
@return Result of the DescribeMatchmakingConfigurations operation returned by the service.
@throws InvalidRequestException
        One or more parameter values in the request are invalid. Correct the invalid parameter values before
        retrying.
@throws InternalServiceException
        The service encountered an unrecoverable internal failure while processing the request. Clients can retry
        such requests immediately or after a waiting period.
@throws UnsupportedRegionException
        The requested operation is not supported in the Region specified.
@sample AmazonGameLift.DescribeMatchmakingConfigurations
@see <a href="http://docs.aws.amazon.com/goto/WebAPI/gamelift-2015-10-01/DescribeMatchmakingConfigurations"
     target="_top">AWS API Documentation</a>
aws-java-sdk-gamelift/src/main/java/com/amazonaws/services/gamelift/AmazonGameLiftClient.java