com.liferay.portal.upgrade
Classes 
DropIndexes
UpgradePause
UpgradeProcess_5_2_5_to_6_0_0
UpgradeProcess_5_2_7_to_6_0_0
UpgradeProcess_5_2_8_to_6_0_5
UpgradeProcess_6_0_0
UpgradeProcess_6_0_1
UpgradeProcess_6_0_12_to_6_1_0
UpgradeProcess_6_0_2
UpgradeProcess_6_0_3
UpgradeProcess_6_0_5
UpgradeProcess_6_0_6
UpgradeProcess_6_1_0
UpgradeProcess_6_1_1
UpgradeProcess_6_2_0
UpgradeProcessUtil