Control which users have specific permissions to access
the data grid in the OSGi framework through the policy file.
About this task
Even if a client is authenticated, that might not be enough
to protect data grid access. If you use the KeyStoreLoginAuthenticator
property, usually you only define a few identities, and all of the
identities might have full access to the grid. In which case, authorization
may not be necessary. Alternatively, if LDAP authentication is used,
there might be many identities in the LDAP server that should not
be granted access to grid data or operations.