aeron-driver/src/main/java/io/aeron/driver/Configuration.java
public static FlowControlSupplier multicastFlowControlSupplier()
    {
        FlowControlSupplier supplier = null;
        try
        {
            final String className = getProperty(MULTICAST_FLOW_CONTROL_STRATEGY_SUPPLIER_PROP_NAME);
            if (null == className)
            {
                return new DefaultMulticastFlowControlSupplier();
            }

            supplier = (FlowControlSupplier)Class.forName(className).getConstructor().newInstance();
        }
        catch (final Exception ex)
        {
            LangUtil.rethrowUnchecked(ex);
        }

        return supplier;
    }
public static FlowControlSupplier multicastFlowControlSupplier()
    {
        FlowControlSupplier supplier = null;
        try
        {
            final String className = getProperty(MULTICAST_FLOW_CONTROL_STRATEGY_SUPPLIER_PROP_NAME);
            if (null == className)
            {
                return new DefaultMulticastFlowControlSupplier();
            }

            supplier = (FlowControlSupplier)Class.forName(className).getConstructor().newInstance();
        }
        catch (final Exception ex)
        {
            LangUtil.rethrowUnchecked(ex);
        }

        return supplier;
    }
Get the supplier of {@link FlowControl}s which can be used for changing behavior of flow control for multicast
publications.

@return the {@link FlowControlSupplier}.