forked from loafle/openapi-generator-original
-D option has been deprecated as it was previously used to: * Pass "system properties" * Pass additional properties This was confusing because we already have --additional-properties and because Java System Properties are passed as -D before program arguments. Confusion around the -D option had existed for some time, but when we introduced the thread-safe GlobalSettings to avoid overwriting Java System Properties, we created a hard break from Java System Properties in the generator. This also disconnected the previous "system properties" from accepting additional properties. Once these newly deprecated methods are removed, we will have a clear separation of concerns between: * Java System Properties * Global generator properties (used as workflow context) * Additional properties (used as generator options) This commit marks multiple places for cleanup in 5.0. These will be breaking changes, and lower effort to break in 5.0 with deprecation warnings now rather than adding sibling properties throughout the code and potentially introducing logic errors.