public InvalidDatabaseException(ICacheExpirationContext context)
     : base($"This migration script is for contexts of type {nameof(CacheExpirationContext)}. Please use your own custom migration process for {context.GetType()}, or switch to using AddEfExpirationService")
 {
 }
 public EfCacheExpirationService(ICacheExpirationContext context, IDateTime dateTime)
 {
     _context  = context;
     _dateTime = dateTime;
 }