# Constants
AndroidErrorKey is key name for android error count of storage.
AndroidSuccessKey is key name for android success count of storage.
IosErrorKey is key name or ios success error of storage.
IosSuccessKey is key name or ios success count of storage.
TotalCountKey is key name for total count of storage.
WebErrorKey is key name for web error count of storage.
WebSuccessKey is key name for web success count of storage.
# Interfaces
Storage interface.