Following the guidance in the documentation for managed module settings, I have created some settings for my custom module.
For the most part this is working fine, but I have one setting that expects an API key for a 3rd party service, and that key is > 512 characters. This results in a validation failure when I try to save the setting because by default all the settings use the ShortTextValue property. How can I use LongTextValue for this particular setting?