This function checks, if an aspect has IDs that may be referenced by other aspects.
By default aspects don't have IDs, so only the implemented classes have IDs. Aspects with IDs will be considered in the meta-data aspect to determine properties like: idCounter and elementCount.
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an object of one of the aspect classes (e.g. NodesAspect, EdgesAspect, etc.)
Uses method dispatch, so the default return is FALSE and only aspect classes with IDs are implemented. This way it is easier to extend the data model.
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