pub trait ValueRefExt {
// Required methods
fn to_data<'a>(&'a self) -> Option<ValueRef<'a>>;
fn to_entities<'a>(&'a self) -> Option<Vec<ValueRef<'a>>>;
}pub trait ValueRefExt {
// Required methods
fn to_data<'a>(&'a self) -> Option<ValueRef<'a>>;
fn to_entities<'a>(&'a self) -> Option<Vec<ValueRef<'a>>>;
}