spec.source(getSource());
        spec.setRemovedSourceFiles(removedFiles);
        spec.setChangedFiles(changedFiles);

        // Convert Swift-like macros to a Map like NativeCompileSpec expects
        Map<String, String> macros = new LinkedHashMap<>();
        for (String macro : getMacros().get()) {
            macros.put(macro, null);
        }
        spec.setMacros(macros);

Class <org.gradle.nativeplatform.toolchain.internal.NativeCompileSpec> is not annotated (directly or via its package) with @org.gradle.api.NonNullApi in (NativeCompileSpec.java:0)
Class <org.gradle.nativeplatform.toolchain.internal.NativeCompiler$1> is not annotated (directly or via its package) with @org.gradle.api.NonNullApi in (NativeCompiler.java:0)