Change-Id: I443ca8c975e44433ea51fd54a0556f2718edcb82


Change-Id: Idb192ea64d4503582fc6bbe80ea5de6daf26d28e


Change-Id: I40fc866945502ae24d35ea6c4be02683d0d08235


Change-Id: I785522803299ae98fbc4b46ae6d8d40e52cd6956


Change-Id: I812e87962c2888593cb342d4df51749b07fcec0d
readme
support for common function
fix
readme