Problem adding a custom JsonDeserializer in EAP

Issue

• Tried to add a custom JSON deserializer for Date as the following below,

public class CustomDateJsonDeserializer extends JsonDeserializer<Date> {
[..]
}

• We get the following below exception stack trace.

java.lang.LinkageError: Failed to link CustomDateJsonDeserializer (Module "deployment.xxx.war:main" from Service Module Loader)
        at org.jboss.modules.ModuleClassLoader.defineClass(ModuleClassLoader.java:396)
        at org.jboss.modules.ModuleClassLoader.loadClassLocal(ModuleClassLoader.java:243)
        at org.jboss.modules.ModuleClassLoader$1.loadClassLocal(ModuleClassLoader.java:73)
        at org.jboss.modules.Module.loadModuleClass(Module.java:517)
        at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:182)
        at org.jboss.modules.ConcurrentClassLoader.performLoadClassUnchecked(ConcurrentClassLoader.java:468)
        at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:456)
        at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:398)
        at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:120)


Caused by: java.lang.NoClassDefFoundError: org/codehaus/jackson/map/JsonDeserializer
        at java.lang.ClassLoader.defineClass1(Native Method) [rt.jar:1.6.0_45]
        at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631) [rt.jar:1.6.0_45]
        at java.lang.ClassLoader.defineClass(ClassLoader.java:615) [rt.jar:1.6.0_45]
        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141) [rt.jar:1.6.0_45]
        at org.jboss.modules.ModuleClassLoader.doDefineOrLoadClass(ModuleClassLoader.java:327)
        at org.jboss.modules.ModuleClassLoader.defineClass(ModuleClassLoader.java:391)
        ... 21 more
Caused by: java.lang.ClassNotFoundException: org.codehaus.jackson.map.JsonDeserializer from [Module "deployment.xxx.war:main" from Service Module Loader]
        at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:190)
        at org.jboss.modules.ConcurrentClassLoader.performLoadClassUnchecked(ConcurrentClassLoader.java:468)
        at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:456)
        at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:423)
        at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:423)
        at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:398)
        at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:120)