private final Map<String, CachedIncludeFile> cachedLookups = new HashMap<String, CachedIncludeFile>();

        FixedIncludePath(List<DirectoryContents> directories) {
            this.directories = directories;
        }

        @Nullable
        @Override
        IncludeFile searchForDependency(String includePath, boolean quotedPath) {
            CachedIncludeFile includeFile = cachedLookups.get(includePath);

Class <org.gradle.language.nativeplatform.internal.incremental.DefaultSourceIncludesResolver$CachedIncludeFile> is not annotated (directly or via its package) with @org.gradle.api.NonNullApi in (DefaultSourceIncludesResolver.java:0)