:: DeveloperApi ::
Any storage backend drivers will need to implement this trait with exactly
StorageClient as the class name. PredictionIO storage layer will look
for this class when it instantiates the actual backend for use by higher
level storage access APIs.
The actual client object.
The actual client object. This could be a database connection or any kind
of database access object.
Configuration of the StorageClient
Set a prefix for storage class discovery.
Set a prefix for storage class discovery. As an example, if this prefix
is set as JDBC, when the storage layer instantiates an implementation
of Apps, it will try to look for a class named JDBCApps.