## Uses of Class
org.jgroups.util.ImmutableReference

- Packages that use ImmutableReference
  Package | Description
  --- | ---
  org.jgroups.blocks.mux |

- - ### Uses of ImmutableReference in org.jgroups.blocks.mux

    Methods in org.jgroups.blocks.mux that return ImmutableReference
    Modifier and Type | Method and Description
    --- | ---
    `protected ImmutableReference<java.lang.Object>` | MuxUpHandler.`handleStateTransferEvent(Event evt)` Extension point for subclasses called by up() when an event related to state transfer is received, allowing the subclass to override the default behavior of passing the event to the default up handler.

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