How to use [io.stream.open-file]

The reference page of io.stream.open-file has its arguments, constraints and declaration.

Works similarly to [io.file.load] but instead of returning the file’s content, it returns the raw stream back to caller.

io.stream.open-file:/foo/bar.txt

After invoking the above, assuming the file exists, a raw Stream object can be found as the value of the [io.stream.open-file] node.