The add-in's public base URL: MJAPI's public URL plus the extension's RootPath relative to MJAPI's base path (guides/SERVER_EXTENSIONS_GUIDE.md: publicUrl already carries that prefix, so the composed RootPath is never appended to it whole).
publicUrl
The add-in's public base URL: MJAPI's public URL plus the extension's RootPath relative to MJAPI's base path (guides/SERVER_EXTENSIONS_GUIDE.md:
publicUrlalready carries that prefix, so the composed RootPath is never appended to it whole).