API Reference > imodeljs-backend > ElementAspects > ExternalSourceAspect ExternalSourceAspect Namespace Enumeration Name Description ExternalSourceAspect.Kind Standard values for the Kind property of ExternalSourceAspect. Defined in core/backend/src/ElementAspect.ts Line 222 ExternalSourceAspect Class An ElementMultiAspect that stores synchronization information for an Element originating from an external source. note The associated ECClass was added to the BisCore schema in version 1.0.2 Extends ElementMultiAspect Implements ExternalSourceAspectProps Methods Name Description findBySource(iModelDb: IModelDb, scope: string, kind: string, identifier: string): { aspectId?: string, elementId?: string } Static Look up the ElementId of the element that contains an aspect with the specified Scope, Kind, and Identifier Inherited methods Name Inherited from Description forEachProperty(func: PropertyCallback, includeCustom: boolean = true): void ElementMultiAspect Call a function for each property of this Entity. is(otherClass: undefined): boolean Static ElementMultiAspect return whether this Entity class is a subclass of another Entity class onDelete(_arg: OnAspectIdArg): void ProtectedStatic ElementMultiAspect Called before an ElementAspect is deleted. onDeleted(_arg: OnAspectIdArg): void ProtectedStatic ElementMultiAspect Called after an ElementAspect was deleted. onInsert(_arg: OnAspectPropsArg): void ProtectedStatic ElementMultiAspect Called before a new ElementAspect is inserted. onInserted(_arg: OnAspectPropsArg): void ProtectedStatic ElementMultiAspect Called after a new ElementAspect was inserted. onUpdate(_arg: OnAspectPropsArg): void ProtectedStatic ElementMultiAspect Called before an ElementAspect is updated. onUpdated(_arg: OnAspectPropsArg): void ProtectedStatic ElementMultiAspect Called after an ElementAspect was updated. Properties Name Type Description checksum undefined | string The cryptographic hash (any algorithm) of the source object's content. identifier string The identifier of the object in the source repository. jsonProperties undefined | string A place where additional JSON properties can be stored. kind string The kind of object within the source repository. scope RelatedElement An element that scopes the combination of kind and identifier to uniquely identify the object from the external source. source undefined | RelatedElement The source of the imported/synchronized object. version undefined | string An optional value that is typically a version number or a pseudo version number like last modified time. Inherited properties Name Type Inherited from Description classFullName Accessor ReadOnly string ElementMultiAspect Get the full BIS class name of this Entity in the form "schema:class". classFullName Accessor StaticReadOnly string ElementMultiAspect Get the full BIS class name of this Entity in the form "schema:class" className Accessor ReadOnly string ElementMultiAspect The name of the BIS class associated with this class. element RelatedElement ElementMultiAspect id string ElementMultiAspect The Id of this Entity. iModel IModelDb ElementMultiAspect The IModelDb that contains this Entity schema Static undefined ElementMultiAspect The Schema that defines this class. schemaName Accessor ReadOnly string ElementMultiAspect The name of the BIS Schema that defines this class Defined in core/backend/src/ElementAspect.ts Line 155 Last Updated: 29 November, 2022