code: def median_abs_diff(signal):
      """Computes median absolute differences of the signal.
  
      Feature computational cost: 1
  
      Parameters
      ----------
      signal : nd-array
          Input from which median absolute difference is computed
  
      Returns
      -------
      float
          Median absolute difference result
  
      """
      return np.median(np.abs(np.diff(signal)))
  
imports: import scipy.signal
  from tsfel.feature_extraction.features_utils import *
label_desc: Use image node_id 7 for calling a global function with example usage: median_abs_diff(signal) and returns: np