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use clojure::rust::*;

use crate::*;
// use clojure::lang::*;

pub trait Collection: IObject+Iterable {
    fn size(&self) -> usize;
    fn isEmpty(&self) -> bool;
    fn contains(&self) -> ObjResult<bool>;
    fn toArray(&self) -> ObjResult<Vec<Object>>;

    /// Collection -> Collection
    // Unimplemented
    // fn add(&self, e: &Object) -> ObjResult<Object>;

    // Unimplemented
    // fn remove(&self, o: Object) -> ObjResult<bool>;

    // (Collection -> Collection) -> bool
    fn containsAll(
        &self,
        c: &Object,
    ) -> ObjResult<bool>;

    // Unimplemented
    // fn addAll(&self, c: Collection) -> ObjResult<bool>;

    // Unimplemented
    // fn removeAll(&self, c: Collection) -> ObjResult<bool>;

    // Unimplemented
    // fn retainAll(&self, c: Collection) -> ObjResult<bool>;

    // Unimplemented
    // fn clear(&self) -> ObjResult<bool>;
}