spec.parameters(params -> {
                    params.getBuildService().set(service);
                    params.getContextId().set(contextId);
                    params.getTypeHierarchyAnalysis().setFrom(service.map(it -> it.getTypeHierarchyAnalysis(contextId)));
                });
            }
        );

        /**
         * Analysis result is an input, but we access it through build service.
         */
        @InputFiles
        @PathSensitive(PathSensitivity.NAME_ONLY)
        ConfigurableFileCollection getTypeHierarchyAnalysis();
    }

    @Inject
    public abstract ObjectFactory getObjects();

    @PathSensitive(PathSensitivity.NAME_ONLY)
    @InputArtifact
    public abstract Provider<FileSystemLocation> getInput();

    }

    @Nullable
    public String getArtifactHash(long contextId, File file) {
        return getResolutionData(contextId).getArtifactHash(file);
    }

    public FileCollection getTypeHierarchyAnalysis(long contextId) {
        return getResolutionData(contextId).getTypeHierarchyAnalysisResult();
    }

    private ResolutionData getResolutionData(long contextId) {