Static HKMetadataKeyMaximumSpeed 

pub unsafe static HKMetadataKeyMaximumSpeed: &'static NSString

Available on crate feature HKMetadata only.

Represents the maximum speed for a workout segment or distance sample.

The expected value type is an HKQuantity object compatible with a speed unit (e.g. m/s). This key may be set on quantity samples of type HKQuantityTypeIdentifierDistanceDownhillSnowSports or a workout segment representing a skiing run.

See also Apple’s documentation