Function isPersonalizedEntry

Returns entry is {
    fields: {
        nt_experiences: (
            | { sys: { id: string; linkType: string; type: "Link" } }
            | {
                fields: {
                    nt_audience?:
                        | null
                        | {
                            fields: {
                                nt_audience_id: string;
                                nt_description?: string;
                                nt_name?: string;
                                [key: string]: JSONType;
                            };
                            metadata: { tags: { sys: ... }[]; [key: string]: JSONType };
                            sys: {
                                contentType: { sys: { id: ...; linkType: ...; type: ... } };
                                createdAt: any;
                                environment: { sys: { id: ...; linkType: ...; type: ... } };
                                id: string;
                                locale?: string;
                                publishedVersion: number;
                                revision: number;
                                space: { sys: { id: ...; linkType: ...; type: ... } };
                                type: "Entry";
                                updatedAt: any;
                            };
                        };
                    nt_config: | null
                    | {
                        components?: ((...) | (...))[];
                        distribution?: number[];
                        sticky?: boolean;
                        traffic?: number;
                    };
                    nt_description?: null
                    | string;
                    nt_experience_id: string;
                    nt_name: string;
                    nt_type: "nt_experiment" | "nt_personalization";
                    nt_variants?: Entry[];
                    [key: string]: JSONType;
                };
                metadata: {
                    tags: { sys: { id: string; linkType: "Tag"; type: "Link" } }[];
                    [key: string]: JSONType;
                };
                sys: {
                    contentType: {
                        sys: { id: string; linkType: "ContentType"; type: "Link" };
                    };
                    createdAt: any;
                    environment: {
                        sys: { id: string; linkType: "Environment"; type: "Link" };
                    };
                    id: string;
                    locale?: string;
                    publishedVersion: number;
                    revision: number;
                    space: { sys: { id: string; linkType: "Space"; type: "Link" } };
                    type: "Entry";
                    updatedAt: any;
                };
            }
        )[];
        [key: string]: JSONType;
    };
    metadata: {
        tags: { sys: { id: string; linkType: "Tag"; type: "Link" } }[];
        [key: string]: JSONType;
    };
    sys: {
        contentType: {
            sys: { id: string; linkType: "ContentType"; type: "Link" };
        };
        createdAt: any;
        environment: {
            sys: { id: string; linkType: "Environment"; type: "Link" };
        };
        id: string;
        locale?: string;
        publishedVersion: number;
        revision: number;
        space: { sys: { id: string; linkType: "Space"; type: "Link" } };
        type: "Entry";
        updatedAt: any;
    };
}

true if the entry conforms to PersonalizedEntry, otherwise false.