Create an instance of this class from an XML string.

C# |
public static S3PostUploadSignedPolicy GetSignedPolicyFromXml( string policyXml )

- policyXml (String)
- XML string generated by ToXml()

Instance of S3PostUploadSignedPolicy
C# |
public static S3PostUploadSignedPolicy GetSignedPolicyFromXml( string policyXml )