PDME — Vault object references

Summary:
The current PDM Enablers standard provides a mechanism for obtaining object references to Vaults. In order to obtain an object reference the client must perform a ‘find’ operation on PdmDocumentManagement::VaultFactory. The operation requires the client to submit a vault_id as an input parameter to the ‘find’ operation.
This mechanism makes it difficult, if not impossible, to obtain references to vaults which ID’s are not known to the client. Also, it is cumbersome when references to several vaults are required.
The PdmDocumentManagement::VaultFactory interface could be extended by an introduction of a new operation, say ‘get_vaults()’ that takes no input parameters and returns a sequence of PdmDocumentManagement::Vault object references.