How do I cap this ice maker water line

I have this plastic tube going to the fridge ice maker but I never use it. Can I take the plastic tube out and cap it somehow?

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TOTOMO 3/8OD Push Fit Angle Stop Adapter Valve - Fits both 3/8 & 1/2 Under Sink Cold Water Supply Diverter for RO Water Purifier System, Coffe Brewer, Ice Maker …

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easy way to cap and fix a leaking ice maker water supply line valve

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easy way to cap and fix a leaking ice maker water supply line valve