How to store systems in a plugin

[badcodecat]

How can I store systems in a plugin, or is it even possible to do so?
Here's a small example to show what I mean:

struct ExamplePlugin
{
	system: MysteryType
}

impl ExamplePlugin
{
	fn new(system: MysteryType) -> ExamplePlugin
	{
		ExamplePlugin
		{
			system: system
		}
	}
	
}

impl Plugin for ExamplePlugin
{
	fn build(&self, app: &mut App)
	{
		app.add_systems(Update, system);
	}
}

What should I put where I have MysteryType?

[hymm]

You can store it as NodeConfigs and then call system.into_configs().

[badcodecat]

What would I use for the generic argument?

[hymm]

Ah, my bad. You should use SystemConfigs, which is an alias for NodeConfigs with the generic filled in for systems.

[badcodecat]

When I use SystemConfigs I get the following error:
mismatched types
expected enum NodeConfigs<std::boxed::Box<(dyn bevy::prelude::System<In = (), Out = ()> + 'static)>>
found fn item for<'a, 'b> fn(bevy::prelude::Commands<'a, 'b>) {test_insert_resource}
Where test_insert_resource is the system.

[hymm]

did you call into_configs on test_insert_resource?

[badcodecat]

Ah, I see adding into_configs() fixed the issue. Sorry I didn't realize I was supposed to call it there.