columnar::PhysliteTestHelpers::ColumnDataScalar< T > Node1 columnar::PhysliteTestHelpers ::ColumnDataScalar< T > + columnName + branchName + data + branch + benchmark + ColumnDataScalar() + connect() + getSize() + setData() Node2 columnar::PhysliteTestHelpers ::IColumnData + ~IColumnData() + connect() + getSize() + setData() Node2->Node1