[SNMP4J] Compilation errors snmp4j-agent-2.3.0 + snmp4j-2.3.1

[forum at friendlysnmp.org]

I put together a simple Eclipse project with source code combined from 
snmp4j-agent-2.3.0 & snmp4j-2.3.1
This is a convenient way for me to navigate through the code.

There are 9 very similar compilation errors. For example, 
org.snmp4j.agent.mo.snmp.NotificationLogMib(line 471):
Type mismatch: cannot convert from
MOTableModel<capture#1-of ? extends MOTableRow> to
MOTableModel<NotificationLogMib.NlmConfigLogEntryRow>

Compiler compliance level 1,6 or 1.7 does not matter.
What I'm missing?

Thanks,
Mark