| _subsystem | AssetLoadingSubsystem to filter by. Summary will include reads that have this subsystem tag only. |
| _subsystems | Array of AssetLoadingSubsystems to filter by. Summary will include reads that have any of these subsystem tags. |
Set AssetLoadingSubsystem filters on an existing SummaryMetricsFilters instance.
This function replaces existing AssetLoadingSubsystem filters on this SummaryMetricsFilters instance. Other filter settings remain unchanged.