@Override
    public DescribeClustersResult describeClusters(DescribeClustersRequest request) {
        request = beforeClientExecution(request);
        return executeDescribeClusters(request);
    }
<p>
Returns information about all provisioned clusters if no cluster identifier is specified, or about a specific
cluster if a cluster name is supplied.
</p>

@param describeClustersRequest
@return Result of the DescribeClusters operation returned by the service.
@throws ClusterNotFoundException
@throws ServiceLinkedRoleNotFoundException
@throws InvalidParameterValueException
@throws InvalidParameterCombinationException
@sample AmazonMemoryDB.DescribeClusters
@see <a href="http://docs.aws.amazon.com/goto/WebAPI/memorydb-2021-01-01/DescribeClusters" target="_top">AWS API
     Documentation</a>
aws-java-sdk-memorydb/src/main/java/com/amazonaws/services/memorydb/AmazonMemoryDBClient.java