[@dataProvider] Add a clarification about setUpBeforeClass
Sync #86 and cleanup.
[ja] Sync with 8394399ce12fbf3078ab4caa3fd8cdc358b2a75c

[@dataProvider] Add a clarification about setUpBeforeClass
[ja] Sync with b37716a832f1ff80dfc15af29df6307c08dbf2ae

Sync #86 and cleanup.