You can not create this expression manually, but there
is a pass in the compiler that adds it to all set
properties in a compilation run.
All it does is basically associate an id with an expression,
so that we can then in a later step have the interpreter do
something with that information. Apart from that, it tries to
be as transparent as possible.
The LLR lowering removes that expression again, just so we can
be sure it does not end up in the generated live code.
NOTE: This library is an internal crate of the Slint project.
This crate should not be used directly by applications using Slint.
You should use the slint crate instead.
WARNING: This crate does not follow the semver convention for versioning and can
only be used with version = "=x.y.z" in Cargo.toml.
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