code: def get_normalization_min_max(array, norm_min, norm_max):
      
      if norm_min is None:
          norm_min = array.min()
      if norm_max is None:
          norm_max = array.max()
  
      return norm_min, norm_max
docs: Get the minimum and maximum of the normalization of the array, which sets the lower and upper limits of the \
      colormap.
  
      If norm_min / norm_max are not supplied, the minimum / maximum values of the array of data are used.
  
      Parameters
      -----------
      array : data.array.scaled_array.ScaledArray
          The 2D array of data which is plotted.
      norm_min : float or None
          The minimum array value the colormap map spans (all values below this value are plotted the same color).
      norm_max : float or None
          The maximum array value the colormap map spans (all values above this value are plotted the same color).