efines an abstract PDF security handler.

This method supports the internal library infrastructure and should not be used by external client code.

This method supports the internal library infrastructure and should not be used by external client code.

This method supports the internal library infrastructure and should not be used by external client code.

This method supports the internal library infrastructure and should not be used by external client code.

This method supports the internal library infrastructure and should not be used by external client code.

This method supports the internal library infrastructure and should not be used by external client code.

This method supports the internal library infrastructure and should not be used by external client code.

This method supports the internal library infrastructure and should not be used by external client code.

This method supports the internal library infrastructure and should not be used by external client code.

This method supports the internal library infrastructure and should not be used by external client code.

This method supports the internal library infrastructure and should not be used by external client code.

This method supports the internal library infrastructure and should not be used by external client code.