code: def activation_shell_code(self, shell=None):
          
          from rez.shells import create_shell
          from rez.rex import RexExecutor
  
          executor = RexExecutor(interpreter=create_shell(shell),
                                 parent_variables=["PATH"],
                                 shebang=False)
          executor.env.PATH.append(self.tools_path)
          return executor.get_output().strip()
docs: Get shell code that should be run to activate this suite.