new ObjectMapper(new MessagePackFactory()).copy();

new MessagePackFactory().copy();

java.lang.NullPointerException
	at org.msgpack.jackson.dataformat.ExtensionTypeCustomDeserializers.<init>(ExtensionTypeCustomDeserializers.java:38)
	at org.msgpack.jackson.dataformat.MessagePackFactory.<init>(MessagePackFactory.java:61)
	at org.msgpack.jackson.dataformat.MessagePackFactory.copy(MessagePackFactory.java:147)
	at com.fasterxml.jackson.databind.ObjectMapper.<init>(ObjectMapper.java:499)
	at com.fasterxml.jackson.databind.ObjectMapper.copy(ObjectMapper.java:617)