How to move icon in primeng accordion from left to right?

I want to use an accordion from PrimeNg and I want collapse icon to be on the right side, not left. I tried to manipulate the iconPos attribute, but I cannot make it working for me. Can someone advise me here?

<p-accordion [multiple]="true" [iconPos]="endVal"> // endVal comes from ts and gets "end"
<p-accordionTab header="Header 1">
Content 1
</p-accordionTab>
<p-accordionTab header="Header 2">
Content 2
</p-accordionTab>
<p-accordionTab header="Header 3">
Content 3
</p-accordionTab>
</p-accordion>

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