I need a BP example of use of Asset Manager to load some stuff in 'playtime'?

Let’s say I want to load some materials that I already have available in the content browser but Im not using them in the current loaded level, and I want to load them to… do whatever I want.
As far as I know that was a little hard to do with blueprints till now (specially if I dont wanted to list one by one the names of the assets and just load and array with whatever assets type that I want may be using some filter for their names (?))
Is this possible or Im missing the point about this ‘Asset Manager’? please some give me some help, thanks