||skipUnknown&&buildMode==null&&targetPlatform!=null&&targetPlatform==engineBinary.targetPlatform// match if target platform matches but build mode is null
];
||skipUnknown&&targetPlatform==null&&buildMode!=null&&buildMode==engineBinary.buildMode// match if build mode matches but target platform is unknown)
||!skipUnknown&&buildMode==null&&targetPlatform==null){// match if neither are provided but skipUnknown flag is provided.