code: def chebyshev(coefs, time, domain):
      """Evaluate a Chebyshev Polynomial.
  
      Args:
          coefs (list, np.array): Coefficients defining the polynomial
          time (int, float): Time where to evaluate the polynomial
          domain (list, tuple): Domain (or time interval) for which the polynomial is defined: [left, right]
      Reference: Appendix A in the MSG Level 1.5 Image Data Format Description.
  
      """
      return Chebyshev(coefs, domain=domain)(time) - 0.5 * coefs[0]
  
imports: from __future__ import annotations
  import warnings
  from datetime import datetime, timedelta
  import dask.array
  import numpy
  import pyproj
  from numpy.polynomial.chebyshev import Chebyshev
  from satpy.readers.eum_base import issue_revision, time_cds_short
  from satpy.readers.utils import apply_earthsun_distance_correction
  from satpy.utils import get_legacy_chunk_size
label_desc: Use image node_id 6 for calling a global function with example usage: chebyshev(coefs, time, domain) and returns: unknown