"type": "object",
                    "properties": {"message": {"title": "Message", "type": "string"}},
                },
                "ValidationError": {
                    "title": "ValidationError",
                    "required": ["loc", "msg", "type"],
                    "type": "object",
                    "properties": {
                        "loc": {

                    "title": "Body_create_upload_files_uploadfiles__post",
                    "required": ["files"],
                    "type": "object",
                    "properties": {
                        "files": {
                            "title": "Files",
                            "type": "array",
                            "items": {"type": "string", "format": "binary"},

            throw exception;
        }
    }

    @Override
    protected MavenContext createContext(InvokerRequest invokerRequest) {
        // TODO: in a moment Maven stop pushing user properties to system properties (and maybe something more)
        // and allow multiple instances per JVM, this may become a pool? derive key based in invokerRequest?
        MavenContext result = residentContext.computeIfAbsent(

    }

    @Override
    public void setProperty(@Nonnull Project project, @Nonnull String key, String value) {
        Properties properties = getMavenProject(project).getProperties();
        if (value == null) {
            properties.remove(key);
        } else {
            properties.setProperty(key, value);
        }
    }

    @Override
    @Nonnull

                    "UserOut": {
                        "title": "UserOut",
                        "required": ["username", "email"],
                        "type": "object",
                        "properties": {
                            "username": {"title": "Username", "type": "string"},
                            "email": {
                                "title": "Email",
                                "type": "string",

                        },
                    },
                },
            },
        },
        "components": {
            "schemas": {
                "HTTPValidationError": {
                    "properties": {
                        "detail": {
                            "items": {
                                "$ref": "#/components/schemas/ValidationError",
                            },

        return createMavenSession(pom, new Properties());
    }

    protected MavenSession createMavenSession(File pom, Properties executionProperties) throws Exception {
        return createMavenSession(pom, executionProperties, false);
    }

    protected MavenSession createMavenSession(File pom, Properties executionProperties, boolean includeModules)
            throws Exception {

    ],
)
def test_optional_schema(path: str):
    openapi = app.openapi()
    body_model_name = get_body_model_name(openapi, path)

    assert app.openapi()["components"]["schemas"][body_model_name] == {
        "properties": {
            "p": {
                "anyOf": [
                    {"type": "string", "format": "binary"},
                    {"type": "null"},
                ],
                "title": "P",
            }

)
def test_optional_str_schema(path: str):
    openapi = app.openapi()
    body_model_name = get_body_model_name(openapi, path)

    assert app.openapi()["components"]["schemas"][body_model_name] == {
        "properties": {
            "p": {
                "anyOf": [{"type": "string"}, {"type": "null"}],
                "title": "P",
            },
        },
        "title": body_model_name,
        "type": "object",
    }

                    "PlaneItem": {
                        "title": "PlaneItem",
                        "required": ["description", "size"],
                        "type": "object",
                        "properties": {
                            "description": {"title": "Description", "type": "string"},
                            "type": {
                                "title": "Type",