summaries
One summary value per column, in the same order as columnsV2.
Each entry is an aggregate across all matching rows for that column (for example, a total revenue
amount for a money column). Entries are null for columns that cannot be summarized. Values use
the same string encoding as ReportCell.value, so the same ReportColumn.typeHints apply
when interpreting them.
Arguments
summaries doesn't take any arguments.
Type
This field resolves to [ String ].