Reinstate lines removed in error by BHoMBot

[peterjamesnugent]

Issues addressed by this PR

Closes #464

Test files

Test by compiling.

Changelog

• Reinstated lines that have been removed in error, that resulted in the toolkit not compiling

  Additional comments

[peterjamesnugent]

@BHoMBot check copyright-compliance @BHoMBot check project-compliance @BHoMBot check serialisation @BHoMBot check null-handling

[bhombot-ci[bot]]

@peterjamesnugent to confirm, the following actions are now queued: - check `copyright-compliance` - check `project-compliance` - check `serialisation` - check `null-handling`

[FraserGreenroyd]

@BHoMBot check copyright-compliance @BHoMBot check project-compliance @BHoMBot check serialisation @BHoMBot check null-handling

[bhombot-ci[bot]]

@FraserGreenroyd to confirm, the following actions are now queued: - check `copyright-compliance` - check `project-compliance` - check `serialisation` - check `null-handling`

[bhombot-ci[bot]]

FAO: @FraserGreenroyd @FraserGreenroyd is seeking dispensation on this Pull Request to skip a required check. Please can you provide authorisation for the check to be skipped, or provide assistance as appropriate. The check they wish to have dispensation on is project-compliance. If you are providing dispensation on this occasion, please reply with: > @BHoMBot this is a DevOps instruction. I am authorising dispensation to be granted on check ref. `20778341972`

[FraserGreenroyd]

@BHoMBot this is a DevOps instruction. I am authorising dispensation to be granted on check ref. 20778341972

[bhombot-ci[bot]]

@FraserGreenroyd I have now provided a passing check on reference `20778341972` as requested.