U-net LayerGraph Properties in Matlab

Hi everyone!

I have a small question (see below)

ans = 
    
      LayerGraph with properties:
    
             Layers: [58×1 nnet.cnn.layer.Layer]
        Connections: [61×2 table]
         InputNames: {'ImageInputLayer'}
        OutputNames: {'Segmentation-Layer'}

With Layers: [58×1 nnet.cnn.layer.Layer] : What does 58 mean? What does 1 mean?