gistfile1.txt

import Mixpanel

final class MixpanelAnalyticsService: AnalyticsService {
    func track(event: String, properties: [String: Any]? = nil) {
        var enrichedProperties = performanceService.getAllMetrics()        
        if let customProperties = properties {
            enrichedProperties.merge(customProperties) { (_, new) in new }
        }        
        let mixpanelProperties = enrichedProperties.compactMapValues { $0 as? MixpanelType }
        mixpanelInstance.track(event: event, properties: mixpanelProperties)
    }
    // ...
}