Function postgres_protocol::types::hstore_to_sql

pub fn hstore_to_sql<'a, I>(
    values: I, 
    buf: &mut Vec<u8>
) -> Result<(), StdBox<Error + Sync + Send>> where
    I: IntoIterator<Item = (&'a str, Option<&'a str>)>, 

Serializes an HSTORE value.