Function read_repo 

pub(crate) fn read_repo<'a, 'd>(
    repo: El<'a, 'd>,
    ctx: &Context<'_>,
) -> Result<Read<'a, 'd>, FpmlError>

Reads a term repo on the master’s bond: the cash the near leg states, at the stated fixed rate or a compounded overnight rate, with the reporting party lending cash where it buys the collateral.