OOC Statement - statementDate mapping

[Blueskies00]

Currently, it appears that the Slovak transformer determines the statementDate by looking for the max date in a record. However, in the instance of updates, this results in the same date being used for all the OOC statements about an entity including the deprecated statement. This means that it is impossible to tell which OOC statement is actually current.

The Open Ownership register records the statementDate field correctly. The method used there should be replicated here.

An example:
On the SK register -
Entity name: GPP INDUSTRIE BAU, s. r. o.
Entity Statement ID: 6595377034097487679
Subject of two OOC statements:
OOC Statement ID: 12345957095720737766
OOC Statement date: 2017-08-03
OOC Statement ID: 4402911589374326650
OOC Statement date: 2017-08-03

On the OO register -
Entity name: GPP INDUSTRIE BAU, s. r. o.
Entity Statement ID: "openownership-register-12113881716578601941"
Subject of two OOC statements:
OOC Statement ID: "openownership-register-5410405319263359080"
OOC Statement date: 2017-08-03
OOC Statement ID: "openownership-register-8730749564560403448"
OOC Statement date: 2017-02-01

The OO register is accurately reflecting the source data here.