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The content of the element is a whitespace-delimited list of "protocol" identifiers. The following are built-in to the SP:
SAML2
SAML 2.0 Name Identifier Management profile (front- and back-channel, IdP-initiated only).
For more complete information about the exact protocol behavior, see the NativeSPManageNameIDService topic.
Other protocols can be "integrated" with the service-based configuration mechanism by supplying the relevant information via the <ProtocolProvider> plugin interface.
Example
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