code: def validate(self):
          
          self.phase = PHASE.VALIDATE
          self.logger.info("Validating %s..." % self.namespace)
          self.instantiate_features()
          context_dict = {}
          if self.target:
              for s in self.target.formula_sections():
                  context_dict["%s:root_dir" % s] = self.directory.install_directory(s)
                  context_dict['config:root_dir'] = self.directory.root_dir
                  context_dict['config:node'] = system.NODE
                  self.target.add_additional_context(context_dict)
          for feature in self.features.run_order:
              self.run_action(feature, 'validate', run_if_error=True)
docs: Validate the target environment