Function pear::parsers::collection

pub fn collection<C: Collection<Item = O>, I: Input, O, F>(
    input: &mut I, 
    start: I::Token, 
    item: F, 
    seperator: I::Token, 
    end: I::Token
) -> Result<C, I> where
    F: FnMut(&mut I) -> Result<O, I>,