code: def format_eta(self):
      if self.eta_known:
          t = int(self.eta)
          seconds = t % 60
          t //= 60
          minutes = t % 60
          t //= 60
          hours = t % 24
          t //= 24
          if t > 0:
              return "{}d {:02}:{:02}:{:02}".format(
                  t, hours, minutes, seconds
              )
          else:
              return "{:02}:{:02}:{:02}".format(hours, minutes, seconds)
      return ""
  
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 11 for calling the ProgressBar obj's underlying member method code with example usage: obj.format_eta() and returns: str, str, str