Ignition Fortress multi camera plugin

edit

Hi all, I'm creating a multicamera plugin and I would like to understand what is the correct way to retrieve the images from the sensors declared in the SDF. I successfully created my sdf::Camera objects in the Configure function by using EntitiesByComponents, but now I can't understand how to correctly create the ignition::sensors::CameraSensor objects to be used to extract the frames in the PostUpdate function.

Thank you Walter