Interface Signature

interface Signature {
    id?: string;
    _id?: Element;
    data?: string;
    _data?: Element;
    onBehalfOf?: Reference<
        | "Organization"
        | "Patient"
        | "Device"
        | "Practitioner"
        | "PractitionerRole"
        | "RelatedPerson",
    >;
    sigFormat?: string;
    _sigFormat?: Element;
    targetFormat?: string;
    _targetFormat?: Element;
    type: Coding[];
    when: string;
    _when?: Element;
    who: Reference<
        | "Organization"
        | "Patient"
        | "Device"
        | "Practitioner"
        | "PractitionerRole"
        | "RelatedPerson",
    >;
}