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        public interface ISecurityPolicyEncodable
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| FromXml | Reconstructs a security object with a specified state from an XML encoding. | 
| ToXml | Creates an XML encoding of the security object and its current state. | 
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            void FromXml( | 
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            SecurityElement ToXml( | 
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Custom code that extends security policy objects needs to implement the ISecurityPolicyEncodable.ToXml and ISecurityPolicyEncodable.FromXml methods to make the objects security-encodable.