The record of the QC that ran over a summary-statistics
collection: the options summaryStatsQc was called with and
when. An empty list() (the default on construction) means QC has
not run; pipelines that need harmonized summary statistics
(fineMappingPipeline, twasWeightsPipeline and others)
refuse such inputs. What QC did to each row is qcInfo.
Examples
data(qtlSumStatsExample)
qcOptions(qtlSumStatsExample)
#> $prebuilt
#> [1] "synthetic example data; QC bypassed"
#>