API Reference > imodeljs-backend > Relationships > ExternalSourceGroupGroupsSources ExternalSourceGroupGroupsSources Class Relates an ExternalSourceGroup to its ExternalSource members. note The associated ECClass was added to the BisCore schema in version 1.0.13 Extends ElementGroupsMembers Methods Name Description constructor(props: ElementGroupsMembersProps, iModel: IModelDb): ExternalSourceGroupGroupsSources Inherited methods Name Inherited from Description buildConcurrencyControlRequest(opcode: DbOpcode): void ElementGroupsMembers Add a request for the locks that would be needed to carry out the specified operation. delete(): void ElementGroupsMembers Delete this Relationship from the iModel. forEachProperty(func: PropertyCallback, includeCustom: boolean = true): void ElementGroupsMembers Call a function for each property of this Entity. insert(): string ElementGroupsMembers Insert this Relationship into the iModel. update(): void ElementGroupsMembers Update this Relationship in the iModel. create<T extends ElementRefersToElements<T>>(iModel: IModelDb, sourceId: string, targetId: string, memberPriority: number = 0): T Static ElementGroupsMembers Create an instance of the Relationship. getInstance<T extends Relationship<T>>(iModel: IModelDb, criteria: string | SourceAndTarget): T Static ElementGroupsMembers insert<T extends ElementRefersToElements<T>>(iModel: IModelDb, sourceId: string, targetId: string): string Static ElementGroupsMembers Insert a new instance of the Relationship. is(otherClass: undefined): boolean Static ElementGroupsMembers return whether this Entity class is a subclass of another Entity class onDeletedDependency(_props: RelationshipProps, _iModel: IModelDb): void Static ElementGroupsMembers Callback invoked by saveChanges on an ElementDrivesElement relationship when the relationship instance has been deleted. onRootChanged(_props: RelationshipProps, _iModel: IModelDb): void Static ElementGroupsMembers Callback invoked by saveChanges on an ElementDrivesElement relationship when its input has changed or is the output of some upstream relationship whose input has changed. Inherited properties Name Type Inherited from Description classFullName Accessor ReadOnly string ElementGroupsMembers Get the full BIS class name of this Entity in the form "schema:class". classFullName Accessor StaticReadOnly string ElementGroupsMembers Get the full BIS class name of this Entity in the form "schema:class" className Accessor ReadOnly string ElementGroupsMembers The name of the BIS class associated with this class. id string ElementGroupsMembers The Id of this Entity. iModel IModelDb ElementGroupsMembers The IModelDb that contains this Entity memberPriority number ElementGroupsMembers schema Static undefined ElementGroupsMembers The Schema that defines this class. schemaName Accessor ReadOnly string ElementGroupsMembers The name of the BIS Schema that defines this class sourceId Readonly string ElementGroupsMembers targetId Readonly string ElementGroupsMembers Defined in core/backend/src/Relationship.ts Line 191 Last Updated: 29 November, 2022