History for SecurityManagement

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The security management interface exists to provide access to
[SecurityManager]s and to provide a way to change the system
SecurityPolicy. The interface will be implemenented by the
!AccessControl package.

getSecurityManager() -- Get a SecurityManager

setSecurityPolicy(a[SecurityPolicy]) -- Set the system default security
  policy. 

  This method should only be caused by system startup code. It should
  never, for example, be called during a web request.