code: def _get_parameter_values(template_dict, parameter_overrides):
          
  
          default_values = SamBaseProvider._get_default_parameter_values(template_dict)
  
          # NOTE: Ordering of following statements is important. It makes sure that any user-supplied values
          # override the defaults
          parameter_values = {}
          parameter_values.update(SamBaseProvider._DEFAULT_PSEUDO_PARAM_VALUES)
          parameter_values.update(default_values)
          parameter_values.update(parameter_overrides or {})
  
          return parameter_values
docs: Construct a final list of values for CloudFormation template parameters based on user-supplied values,
          default values provided in template, and sane defaults for pseudo-parameters.
  
          Parameters
          ----------
          template_dict : dict
              SAM template dictionary
  
          parameter_overrides : dict
              User-supplied values for CloudFormation template parameters
  
          Returns
          -------
          dict
              Values for template parameters to substitute in template with