docs: def get_hist(rfile, histname, get_overflow=False):
      """Read a 1D Histogram."""
      import root_numpy as rnp
  
      rfile = open_rfile(rfile)
      hist = rfile[histname]
      xlims = np.array(list(hist.xedges()))
      bin_values = rnp.hist2array(hist, include_overflow=get_overflow)
      rfile.close()
      return bin_values, xlims