One way to get the bond to start on 2016-05-16 but accrue from a day earlier is to use “overrideStartDate” and a stub convention as follows:
private static final ResolvedFixedCouponBond _912828R36 = FixedCouponBond.builder()
.securityId(SecurityId.of(StandardId.of("OG-Ticker", "912828R36")))
.dayCount(DAY_COUNT)
.fixedRate(1.625 * 0.01)
.legalEntityId(ISSUER_ID)
.currency(Currency.USD)
.notional(NOTIONAL)
.accrualSchedule(PeriodicSchedule.builder()
.startDate(LocalDate.of(2016, 5, 16))
.endDate(LocalDate.of(2026, 5, 15))
.overrideStartDate(AdjustableDate.of(LocalDate.of(2016, 5, 15)))
.frequency(Frequency.P6M)
.businessDayAdjustment(BUSINESS_ADJUST)
.stubConvention(StubConvention.SHORT_INITIAL)
.build())
.settlementDateOffset(DATE_OFFSET)
.yieldConvention(YIELD_CONVENTION)
.build()
.resolve(REF_DATA);