OM Extension to find net price plus tax

Summary:

How can we get the sales order line net price plus tax value using OM extension
Content (please ensure you mask any confidential information):

using the ExtendedAmount/UnitSellingPrice only get the your price but not included the net price plus tax.

Version (include the version you are using, if applicable):

24B (11.13.24.04.0)

Code Snippet (add any code snippets that support your topic, if applicable):