Missing documentation for `decimals` in `sap.ui.core.format.FileSizeFormat`

OpenUI5 version: 1.120.2

Browser/version (+device/version):

Any other tested browsers/devices(OK/FAIL):

URL (minimal example if possible):

• Online example: https://sapui5.hana.ondemand.com/sdk/docs/topics/24f340bdd59e4428aab30a20d14e2ebc.html
• API: https://sapui5.hana.ondemand.com/sdk/#/api/sap.ui.core.format.FileSizeFormat%23methods/sap.ui.core.format.FileSizeFormat.getInstance

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Steps to reproduce the problem:

What is the expected result?

What happens instead?

Any other information? (attach screenshot if possible)

For context, I am working on a UI5 project in typescript.

I want to format file size into 2 decimal places, so I referenced the online example:

I typed FileSizeFormat.getInstance({ decimals: 2 }).format(1048576) into my code. But I got the error:

I have to suppress the Typescript warning by adding this line:

// @ts-expect-error decimals parameter is not documented in UI5 constructor

I know that decimals: 2 works, because without it, the file size gets formatted to 1.048576 MB. But when I include it, the file size is correctly formatted to 1.05 MB. This might be a simple missing documentation issue.