QueryBucketCashFlowDrillDown
/api/instrumentevents/$queryBucketCashFlowDrillDown
Returns the individual cashflows inside the requested bucket window for the holdings of the specified
portfolios, annotated with the source (Instrument, Transaction or SRS) that produced each cashflow.
The drill-down returns the complete resolved stream, including transaction-sourced cashflows, which
bucketed responses using the (default) InstrumentCashFlow representation exclude. To reconcile the
drill-down against such a bucketed response, first exclude rows with a sourceType of 'Transaction'.