Missing class in eclipse build path

Eclipse Platform
Version: 3.3.2
Build id: M20080221-1800
Weblogic Server 10.0
I use an ant build file to manage building our project, and it generates and compiles without issue. I've got all the Weblogic libraries on the eclipse project build path, but for some reason a generated AuthenticationMBean.java class is importing weblogic.management.commo.StandardInterface which isn't anywhere within the Weblogic 10.0 libraries. It used to be located in weblogic.jar in version 9.1, but I can't find it in 10.0. Eclipse is complaining about it. Can anyone point out where this class now lives?
Thanks,
Steve

For anyone who finds this post with the same problem, the answers are the following:
C:\bea\modules\com.bea.core.mbean.maker_1.0.1.0.jar
or
C:\bea\modules\com.bea.core.mbean.support_1.0.1.0.jar

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