Updating Associated Metadata Provider to follow the existing pattern.

cc @dougbu @rynowak 
@rynowak it is.  however @harshgMSFT is being consistent with the other `ComputeJunk()` methods in this class.  I'd like to see the `?` and `:` at the end of the lines too (or all on one line) :smiling_imp:  but consistency wins here -- at least 'til we clean the entire class.