ContentClassifier: Add OpenBoxBlock description
ContentClassifier: Add OpenBoxBlock description

DeepnessLab/obsi,pavel-lazar/obsi,DeepnessLab/obsi,pavel-lazar/obsi,DeepnessLab/obsi,OpenBoxProject/obsi,OpenBoxProject/obsi,OpenBoxProject/obsi,pavel-lazar/obsi,DeepnessLab/obsi,pavel-lazar/obsi,OpenBoxProject/obsi