code: def generate_time(signal, sample_rate=1000):
      
  
      # Download of signal if the input is a url.
      if _is_a_url(signal):
          # Check if it is a Google Drive sharable link.
          if "drive.google" in signal:
              signal = _generate_download_google_link(signal)
          data = load(signal, remote=True)
          key_level_1 = list(data.keys())[0]
          if "00:" in key_level_1:
              mac = key_level_1
              chn = list(data[mac].keys())[0]
              signal = data[mac][chn]
          else:
              chn = key_level_1
              signal = data[chn]
  
  
      nbr_of_samples = len(signal)
      end_of_time = nbr_of_samples / sample_rate
  
      # ================================= Generation of the Time Axis ===============================
      time_axis = numpy.linspace(0, end_of_time, nbr_of_samples)
  
      return list(time_axis)
docs: -----
      Brief
      -----
      Function intended to generate a time axis of the input signal.
  
      -----------
      Description
      -----------
      The time axis generated by the acquisition process originates a set of consecutive values that represents the
      advancement of time, but does not have specific units.
  
      Once the acquisitions are made with specific sampling frequencies, it is possible to calculate the time instant
      of each sample by multiplying that value by the sampling frequency.
  
      The current function maps the values in the file produced by Opensignals to their real temporal values.
  
      ----------
      Parameters
      ----------
      signal : list
          List with the signal samples.
  
      sample_rate : int
          Sampling frequency of acquisition.
  
      Returns
      -------
      out : list
          Time axis with each list entry in seconds.