BadMethodCallException: Call to undefined method...

Getting this error with a unit test

1) DeletePulseMutationTest::testDeletePulseDeletesCorrectResources
BadMethodCallException: Call to undefined method Database\Factories\PulseAnswerFactory::getRelated()


Here is the code that is failing in my unit test

Pulse::factory()->create([
'pulse_period_start_date' => '2021-01-01',
'pulse_period_end_date' => '2021-01-31',
'submitted_by_id' => $submitter,
'reviewed_by_id' => $reviewer,
'reviewed_at' => '2021-02-01'
])->has(
PulseAnswer::factory()->count(1)
->has(PulseReply::factory()->count(1))
);


I'm using Laravel version 11.28 and following these docs https://laravel.com/docs/11.x/eloquent-factories#factory-relationships

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