layerCall(layerName, input) {
    if (!this.modelLayersMap.has(layerName)) return

    let x
    if (input instanceof Tensor) {
      x = input
    } else {
      x = new Tensor(input.data, input.shape)
    }
    const layer = this.modelLayersMap.get(layerName)
    return layer.call(x)
  }
Run computation on a specific layer

@param {string} layerName
@param {Tensor|Object} input - can be Tensor instance or ndarray object