code: def chebyshev_3d(coefs, time, domain):
      """Evaluate Chebyshev Polynomials for three dimensions (x, y, z).
  
      Expects the three coefficient sets to be defined in the same domain.
  
      Args:
          coefs: (x, y, z) coefficient sets.
          time: See :func:`chebyshev`
          domain: See :func:`chebyshev`
  
      Returns:
          Polynomials evaluated in (x, y, z) dimension.
      """
      x_coefs, y_coefs, z_coefs = coefs
      x = chebyshev(x_coefs, time, domain)
      y = chebyshev(y_coefs, time, domain)
      z = chebyshev(z_coefs, time, domain)
      return x, y, z
  
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 7 for calling a global function with example usage: chebyshev_3d(coefs, time, domain) and returns: x,  y,  z