code: def mean_average(X: np.ndarray, **kwargs) -> np.ndarray:
      """Compute the mean average of time series.
  
      Parameters
      ----------
      X : np.ndarray (3d array of shape (n_instances, n_dimensions, series_length))
          Time series instances compute average from.
  
      Returns
      -------
      np.ndarray (2d array of shape (n_dimensions, series_length)
          The time series that is the mean.
      """
      if X.shape[0] <= 1:
          return X
      return X.mean(axis=0)
  
imports: from typing import Callable, Dict
  import numpy
  from sktime.clustering.metrics.averaging._dba import dba
label_desc: Use image node_id 1 for calling a global function with example usage: mean_average(X) and returns: X, X