1 
/// Returns the default rule sets, excluding solver specific ones.
2
504 
pub fn get_default_rule_sets() -> Vec<String> {
3
504 
    vec![
4
504 
        "Base".to_string(),
5
504 
        "Constant".to_string(),
6
504 
        "Bubble".to_string(),
7
504 
    ]
8
504 
}