Dear Dart experts, how to read a file with a non-standard encoding?

Question

Dart

Help a newbie!
I'm interested in dart, I'm trying to learn...

As it should be for a beginner, problems appear in the most unexpected places.

So, I need to read a text file encoded in UTF 16LE. It's strange, but I don't have a regular way to do this in dart.
UTF-8 only if I'm not mistaken.

Neither in python nor in PHP, with which I am a little familiar, there are no such problems.

Help with an example ...

Thank you for your attention and help!