Static kVTExtensionProperties_ExtensionIdentifierKey 

pub unsafe static kVTExtensionProperties_ExtensionIdentifierKey: &'static VTExtensionPropertiesKey

Available on crate feature VTUtilities only.

A CFDictionary key for the video decoder extension identifier.

This key points to a CFStringRef value with the extension identifier, corresponding to the ClassImplementationID value from the EXAppExtensionAttributes dictionary in the Info.plist file.

See also Apple’s documentation