Change `private` to `protected` for Overrides
Change `private` to `protected` for Overrides

Change `private` to `protected` for overrides

- Change `$numThumbnails` to `protected`
- Change `$attributes` to `protected`

matt9mg/concrete5,avdevs/concrete5,matt9mg/concrete5,avdevs/concrete5,MichaelMaar/concrete5,MichaelMaar/concrete5,avdevs/concrete5,MichaelMaar/concrete5,TimDix/concrete5,matt9mg/concrete5,TimDix/concrete5,TimDix/concrete5