How to use the pyats.aetest.setup function in pyats

    @aetest.setup
    def verify_prerequisite(self):
        raise NotImplementedError

@aetest.setup
def setup_section(self, steps, testbed, section=None, data=None):
    return self.dispatcher(steps, testbed, section, data)

    @aetest.setup
    def prerequisites(self,uut,ospf_id):
        ''' Verify Ospf configured or nor '''

        #To verify if Ospf is configured
        output = uut.parse('show ip ospf')
        if ospf_id in output:
            self.skipped("Ospf id {id} is not showing in the "
            "output of the cmd, this is "
            "unexpected!".format(id=ospf_id))

    @aetest.setup
    def prerequisites(self,uut,ospf_id):
        output = uut.parse('show ip ospf')
        if ospf_id in output:
            self.skipped("Ospf id {id} is not showing in the "
            "output of the cmd, this is "
            "unexpected!".format(id=ospf_id))

    @aetest.setup
    def verify_prerequisite(self, uut, abstract, steps, timeout):
        '''Learn Ops object and verify the requirements.

           If the requirements are not satisfied, then skip to the next
           testcase.

           Args:
               uut (`obj`): Device object.
               abstract (`obj`): Abstract object.
               steps (`step obj`): aetest step object
               timeout (`timeout obj`): Timeout Object

           Returns:
               None

           Raises:

    @aetest.setup
    def verify_prerequisite(self, uut, abstract, steps, timeout):
        '''Learn Ops object and verify the requirements.

           If the requirements are not satisfied, then skip to the next
           testcase.

           Args:
               uut (`obj`): Device object.
               abstract (`obj`): Abstract object.
               steps (`step obj`): aetest step object
               timeout (`timeout obj`): Timeout Object

           Returns:
               None

           Raises:

    @aetest.setup
    def verify_prerequisite(self, uut, abstract, steps, timeout):
        raise NotImplementedError

    @aetest.setup
    def get_simulations(self, uut):
        ''' Get simulations

            Args:
                 uut (`obj`): Device object

            Returns:
                 None

            Raises:
                 pyATS Results
        '''

        log.info("Getting list of simulations.")
        try:
            self.sim_list = get_simulations(uut)

    @aetest.setup
    def verify_prerequisite(self):
        raise NotImplementedError

    @aetest.setup
    def verify_prerequisite(self, uut, abstract, steps, timeout, add_igmp_group=None):

        self.timeout = timeout

        try:
            self.pre_snap = self.mapping.learn_ops(device=uut,
                                                   abstract=abstract,
                                                   steps=steps,
                                                   timeout=timeout)
        except Exception as e:
            self.errored("Section failed due to: '{e}'".format(e=e))

        # nothing in the static groups,
        # then learn if any groups to have some vrf interface value
        if any(not item for item in self.mapping.keys):
            self.mapping.requirements['ops.igmp.igmp.Igmp']['requirements'] = \