How to use the @alfresco/adf-process-services-cloud.GroupCloudComponent.MODE_SINGLE function in @alfresco/adf-process-services-cloud

encapsulation: ViewEncapsulation.None
})
export class PeopleGroupCloudDemoComponent {

    DEFAULT_FILTER_MODE: string = 'appName';
    DEFAULT_GROUP_PLACEHOLDER: string = `[{"id": "1", "name":"activitiUserGroup"}]`;
    DEFAULT_PEOPLE_PLACEHOLDER: string = `[{"id": "1", email": "user@user.com", "firstName":"user", "lastName": "lastName", "username": "user"}]`;

    peopleMode: string = PeopleCloudComponent.MODE_SINGLE;
    preSelectUsers: string[] = [];
    peopleRoles: string[] = [];
    peopleAppName: string;
    peopleFilterMode: string = this.DEFAULT_FILTER_MODE;
    peoplePreselectValidation: Boolean = false;

    groupMode: string = GroupCloudComponent.MODE_SINGLE;
    preSelectGroup: IdentityGroupModel[] = [];
    selectedGroupList: IdentityGroupModel[] = [];
    groupRoles: string[];
    groupAppName: string;
    groupFilterMode: string = this.DEFAULT_FILTER_MODE;

    setPeoplePreselectValue(event: any) {
        this.preSelectUsers = this.getArrayFromString(event.target.value);
    }

    setGroupsPreselectValue(event: any) {
        this.preSelectGroup = this.getArrayFromString(event.target.value);
    }

    setPeopleRoles(event: any) {
        this.peopleRoles = this.getArrayFromString(event.target.value);