* setting non existant base directory now yields suitable error message
* corrections to missing base directory message and comments added for clarity
* added check for valid base directory before node loggin and bootstrapping
* removed uneeded import
* quantum computer joke back by popular demand and not back at the same time
* CORDA-2817 Revert CORDA-2162 but modify Cash move to allow multiple move commands and thus multiple generateSpends in the same transaction.
* CORDA-2817 Remove API changes and internalise into Cash.
* CORDA-2813 Add DbException handler to terminate process when the DB goes away or gives up.
Also add a helper to terminate the node and use it instead of calling Runtime.halt() in random places.
* CORDA-2813 Address threading/blocking concerns raised during review
* Tests for custom registry restrictions
* ENT-3121 restrict custom serialisation
* Remove redundant code
* Only count declared annotations
* Check annotation on superclasses, remove annotation from ByteArray
* Forbid custom serialization of primitive types
* Remove @CordaSerializable from another class that is always handled by custom serialisation
* Add log warnings to aid diagnosis of custom serialization issues
* Remove another annotation
* Remove another annotation
* Remove another annotation
* Remove another annotation
* Fixup api-current
* Fixup api-current
* KDocs on exceptions
In Corda 4, FinalityFlow was updated to become an initiated flow, in order to ensure a node does not have to accept any signed transaction it receives without being able to check it first. The old behaviour of FinalityFlow was gated behind a targetPlatformVersion check, to prevent apps targeting V4 from using the old behaviour.
This is problematic for a few reasons. For an app wishing to be backwards compatible with a version running on V3, this forces the app to set targetPlatformVersion = 3, even if the app is thoroughly tested against V4. This goes against the purpose of the targetPlatformVersion. Another consequence is that an app remains pinned to targetPlatformVersion = 3 until it is sure that there are no other apps running at a lower version in the network, which would prevent newer versions of the app from taking advantage of features gated behind targetPlatformVersion checks. (Note that the restriction only prevents a new version of the app from initiating FinalityFlow with the old version - the old version is able to initiate a FinalityFlow and the new version will handle it, assuming the app has been written correctly.)
This fix removes the targetPlatformVersion check from FinalityFlow, and also provides a few documentation updates to clarify what level of testing would be expected to set a targetPlatformVersion.
Addressed review comments - removed nested if and added parameter name for the usage of requiresCertificates.
Removed unnecessary import and white space.
