For this purpose, the SFX document factory methods got an additional parameter respectively flag
("DocumentRecoverySupport" resp. SFXMODEL_DISABLE_DOCUMENT_RECOVERY). This flag is used by database
documents to remove the interface from sub documents (aka forms/reports).
In this course, some of the functionality around those SFXMODELL_* flags, previously duplicated in
all applications, has been consolidated into a new SfxObjectShell constructor.
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