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Each realm can contain one or more module definition. Each module identify a LoginModule and the className attribute must be set to the class name of the login module to use. Note that this login module must be available from the bundle classloader, so either it has to be defined in the bundle itself, or the needed package needs to be correctly imported. The flags attribute can take one of four values that are explained on the JAAS documentation.
The content of the module element is parsed as a properties file and will be used to further configure the login module.

Deploying such a code will lead to a JaasRealm object in the OSGi registry, which will then be used when using the JAAS login module.

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