[1.16.5] Is it possible to define complex objects in config?

[Gr3atsaga]

As a simple example, would it be possible to store a complex object in the config such as a pair of Player UUID and Name?

Example: { UUID: "d934c206-0128-4cde-9aa1-41f9a83b6aae", Name: "Gr3atsaga" }

[Luis_ST]

no, since the config system use .toml files and they only supports primitive variable types like int, double or String
you could store the UUID and the Name in Strings and load them from Strings

what do you try to achieve?