programmatically filling in multiple Repeater entries on create form

Hey, I have a repeater on "CreateInvoice" page that I want to populate with "expected invoicelines". I have my repeater setup in "CreateInvoice" page getSteps() method with a relationship to InvoiceLine, but I want to pre-populate the repeater entries with multiple entries that don't exist yet as InvoiceLine. Is there a method that I can manually set multiple repeater rows and their values? I want to basicly set the entries using an []['repeater_field'=> 'value'] array without them existing in the database yet

Solution:

nvm its $repeater->default([ ['field' => 'value'] ])...

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