pub fn once(value: Value) -> Self {
        Self {
            iter: IterRepr::Once(Some(value)),
        }
    }
/// Creates an iterator that yields an element exactly once.
Creates an iterator that yields an element exactly once.
Creates an iterator that yields an element exactly once .
pub fn once(value: Value) -> Self {
        Self {
            iter: IterRepr::Once(Some(value)),
        }
    }
pub fn once ( value : Value ) -> Self { Self { iter : IterRepr :: Once ( Some ( value ) ) , } }
Creates an iterator that yields an element exactly once.
Creates an iterator that yields an element exactly once .
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