DistributedPingMessage extends HighPriorityDistributionMessage { @Override public KnownVersion[] getSerializationVersions() { return null; } DistributedPingMessage();  DistributedPingMessage(DistributedMember targetServer, ClientProxyMembershipID proxyID); @Override void toData(DataOutput out, SerializationContext context); @Override void fromData(DataInput in, DeserializationContext context); @Override int getDSFID(); @Override KnownVersion[] getSerializationVersions(); @Override String toString();  }
@Test public void testGetSerializationVersions() { assertNull(new DistributedPingMessage().getSerializationVersions()); }