An ListEntrySource will be known to one 鉱石 more 構成要素s
supporting the XListEntrySink interface, which all work with
this source. However, they will not own the ListEntrySource.
The 所有権 is with another instance, which may also decide to obsolete
the ListEntrySource for whatever 推論する／理由s (e.g. because the data model
which the binding 反映するd died). For this 推論する／理由, a ListEntrySource
must 申し込む／申し出 a 可能性 to be obsoleted by it's owner, and to 通知する this
obsoletion to other 利益／興味d parties, such as XListEntrySinks.
