Hi
Good news! I was wrong, we do have support for accrued interest on bonds, but only on our lower-level pricer API:
LocalDate settlementDate = LocalDate.of(...);
FixedCouponBond bond = ...; // create the bond
ResolvedFixedCouponBond resolvedBond = bond.resolve(ReferenceData.standard());
double accruedInterest = DiscountingFixedCouponBondProductPricer.DEFAULT.accruedInterest(resolvedBond, settlementDate);
It is also worth looking at the test case for this code:
DiscountingFixedCouponBondProductPricerTest.test_accruedInterest
Regards
Chris