Should stateTag be increased when deleting a child resource?
According to the definition of stateTag in TS-0001 9.6.1.3.2, stateTag should be incremented on every modification of the resource.
Is the creation of a child resource considered as a modification of the resource? According to TS-0004, that's only the case when the child resource is a contentInstance/timeSeriesInstance.
If creation of a child resource is considered as a modification of the resource, should deletion of a child resource be considered as a modification as well?