Introducing interface to hide unexported struct
Introducing interface to hide unexported struct

Signed-off-by: Maciej "Iwan" Iwanowski <b4ba7e346974b0a6d1e49aa591726755b9c89301@intel.com>

linux-on-ibm-z/cadvisor,linux-on-ibm-z/cadvisor,linux-on-ibm-z/cadvisor