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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:

def destroy(instance_id, call=None):
    '''
    Destroy an instance.

    CLI Example:

    .. code-block:: bash

        salt-cloud -a destroy i-2f733r5n
        salt-cloud -d i-2f733r5n
    '''
    if call == 'function':
        raise SaltCloudSystemExit(
            'The destroy action must be called with -d, --destroy, '
            '-a or --action.'
        )

    instance_data = show_instance(instance_id, call='action')
    name = instance_data['instance_name']

    __utils__['cloud.fire_event'](
        'event',
        'destroying instance',
        'salt/cloud/{0}/destroying'.format(name),
        args={'name': name},
        sock_dir=__opts__['sock_dir'],
        transport=__opts__['transport']
    )

    params = {
        'action': 'TerminateInstances',
        'zone': _get_specified_zone(provider=get_configured_provider()),
        'instances.1': instance_id,
    }
    result = query(params)

    __utils__['cloud.fire_event'](
        'event',
        'destroyed instance',
        'salt/cloud/{0}/destroyed'.format(name),
        args={'name': name},
        sock_dir=__opts__['sock_dir'],
        transport=__opts__['transport']
    )

    return result