class_docstr: Base class for Gaussian processes. 
class_docstr_tok: ["Base","class","for","Gaussian","processes","."]
docstr: Additional set up. 
docstr_tok: ["Additional","set","up","."]
code: def _set_up(self):
      """Additional set up."""
      # Test that if the kernel is not guaranteed to be PSD, then have have a way to
      # handle it.
      if not self.kernel.is_guaranteed_psd():
          assert self.handle_non_psd_kernels in [
              "project_first",
              "try_before_project",
          ]
  
imports: from __future__ import division
  from argparse import Namespace
  from itertools import product
  import sys
  import numpy
  from ..distributions.model import Model
  from ..distributions import continuous
  from ..distributions import discrete
  from ..utils.general_utils import stable_cholesky, draw_gaussian_samples, project_symmetric_to_psd_cone, solve_lower_triangular, solve_upper_triangular
  from ..utils.oper_utils import direct_ft_maximise, pdoo_maximise, random_maximise, random_sample_cts_dscr
  from ..utils.option_handler import get_option_specs, load_options
  from ..utils.reporters import get_reporter
label_desc: Use image node_id 2 for calling the GP obj's underlying member method code with example usage: obj._set_up() without return types