For example the following codes throws an NPE:

Configuration configuration = new ConfigurationBuilder()
         .eviction().maxEntries(20)
         .build();

----

Configuration configuration = new ConfigurationBuilder()
         .jmxStatistics()
         .build();

The exception:

java.lang.NullPointerException
at org.infinispan.configuration.cache.LoadersConfigurationBuilder.create(LoadersConfigurationBuilder.java:48)
at org.infinispan.configuration.cache.ConfigurationBuilder.build(ConfigurationBuilder.java:140)