code: def make_step(self, n_steps):
      self.pos += n_steps
      if self.length_known and self.pos >= self.length:
          self.finished = True
  
      if (time.time() - self.last_eta) < 1.0:
          return
  
      self.last_eta = time.time()
  
      # self.avg is a rolling list of length <= 7 of steps where steps are
      # defined as time elapsed divided by the total progress through
      # self.length.
      if self.pos:
          step = (time.time() - self.start) / self.pos
      else:
          step = time.time() - self.start
  
      self.avg = self.avg[-6:] + [step]
  
      self.eta_known = self.length_known
  
imports: import contextlib
  import math
  import os
  import sys
  import time
  from ._compat import _default_text_stdout
  from ._compat import CYGWIN
  from ._compat import get_best_encoding
  from ._compat import int_types
  from ._compat import isatty
  from ._compat import open_stream
  from ._compat import range_type
  from ._compat import strip_ansi
  from ._compat import term_len
  from ._compat import WIN
  from .exceptions import ClickException
  from .utils import echo
label_desc: Use image node_id 17 for calling the ProgressBar obj's underlying member method code with example usage: obj.make_step(n_steps) without return types