private: bool __thiscall PluginLoader::isInterfaceAvailable(struct PluginLoader::LOADED_MODULE *, char const *)

Mangled name

?isInterfaceAvailable@PluginLoader@@AAE_NPAULOADED_MODULE@1@PBD@Z

Exported by

size	filename	version
1373696	vpncommon.dll	4, 6, 04056