Security Statement Items; in the Business Layer some properties are not initialised correctly

In the Business Layer, some properties of Security Statement Items are not initialised correctly, meaning String properties return Nothing rather than a blank String.

This is not the typical practice of finPOWER Connect properties, and could lead to unexpected results, so has been changed.

This applies to the following types of objects:

• finSecurityStmtItemAircraft
• finSecurityStmtItemBoat
• finSecurityStmtItemInsurance
• finSecurityStmtItemInvestment
• finSecurityStmtItemLand
• finSecurityStmtItemMotorVehicle
• finSecurityStmtItemSerialNumberedGood
• finSecurityStmtItemStandard

For example, the finSecurityStmtItemMotorVehicle.VIN property is Nothing rather than a blank string.