@Override
    public TenantDatabase modifyTenantDatabase(ModifyTenantDatabaseRequest request) {
        request = beforeClientExecution(request);
        return executeModifyTenantDatabase(request);
    }
<p>
Modifies an existing tenant database in a DB instance. You can change the tenant database name or the master user
password. This operation is supported only for RDS for Oracle CDB instances using the multi-tenant configuration.
</p>

@param modifyTenantDatabaseRequest
@return Result of the ModifyTenantDatabase operation returned by the service.
@throws DBInstanceNotFoundException
        <code>DBInstanceIdentifier</code> doesn't refer to an existing DB instance.
@throws TenantDatabaseNotFoundException
        The specified tenant database wasn't found in the DB instance.
@throws TenantDatabaseAlreadyExistsException
        You attempted to either create a tenant database that already exists or modify a tenant database to use
        the name of an existing tenant database.
@throws InvalidDBInstanceStateException
        The DB instance isn't in a valid state.
@sample AmazonRDS.ModifyTenantDatabase
@see <a href="http://docs.aws.amazon.com/goto/WebAPI/rds-2014-10-31/ModifyTenantDatabase" target="_top">AWS API
     Documentation</a>
aws-java-sdk-rds/src/main/java/com/amazonaws/services/rds/AmazonRDSClient.java