How to call "from formatted string"?

I cannot tell from the documentation how to call "from formatted string". There doesn't appear to be an externally visible `from_formatted_string()` method. Currently both `FromFormattedStringVisitor` and also the package that contains it `ansys.common.variableinterop.from_formatted_string_visitor` are publicly visible. I would expect those to be internal implementation details only.

Start by reading the documentation and inspecting the public exports around ansys.common.variableinterop.from_formatted_string_visitor and FromFormattedStringVisitor. Determine how users are intended to call the formatted-string functionality and whether these names are meant to remain public; done means the supported usage and public visibility are unambiguous.

Written by the indexing model from the issue text.