Gets a string that describes provider capabilities.
HRESULT _stdcall GetCapabilities([out, retval] BSTR* result);
[out] An XML string that represents the capabilities of an Outlook Social Connector (OSC) provider.
The returned result XML string must comply with the schema definition for the capabilities element, as defined in the XML schema for OSC provider extensibility.
The provider must return a result string to enable subsequent calls from the OSC to the provider to operate correctly.