Add further action method displaycontent

Change-Id: Iec3fa7f7c12ab2fcd0b0bd1be29db05d88fb16c8
Add warpper method file get contents

Change-Id: I291b426ed34e136b9fb3f8fbd15e225373eb063d
Remove calulation error

Change-Id: I763377dd99ba70b7b56e00f6965399f9ff0885ee