What does JsonKey do ?

[ValentinVignal]

In the README.md https://github.com/vanlooverenkoen/db_viewer/blob/master/drift_db_viewer/README.md

It is written what we should use JsonKey for named columns or you won't be able to "hide it".

db_viewer/drift_db_viewer/README.md

Lines 32 to 46 in 228bb7e

	### Using named columns
	When using named columns you should add a @JsonKey to the column otherwise we won't be able to hide this table
	```
	class Todos extends Table {
	IntColumn get id => integer().autoIncrement()();
	TextColumn get title => text().withLength(min: 6, max: 32)();
	@JsonKey('body') //This is required for the drift_db_viewer.
	TextColumn get content => text().named('body')();
	IntColumn get category => integer().nullable()();
	}
	```

What do you mean "hide it" ?