@constant kSecAssessmentContextKeyOperation Type of operation (see overview above). This defaults
to the kSecAssessmentOperationTypeExecute.
*/
+extern CFStringRef kSecAssessmentContextKeyUTI; // caller determination of UTI for primary assessment subject
+
extern CFStringRef kSecAssessmentContextKeyFeedback; // feedback reporting block
typedef Boolean (^SecAssessmentFeedback)(CFStringRef type, CFDictionaryRef information);
extern CFStringRef kSecAssessmentFeedbackProgress; // progress reporting feedback