def METHOD_NAME(m, s, e, p, t):
    """pyomo rule definition: Here we can use all objects from the block or
    the om object, in this case we don't need anything from the block
    except the newly defined set MYFLOWS.
    """
    expr = om.flow[s, e, p, t] >= om.flows[s, e].outflow_share[t] * sum(
        om.flow[i, o, p, t] for (i, o) in om.FLOWS if o == e
    )
    return expr