columnar::TestUtils::ColumnDataScalar< T > Node1 columnar::TestUtils ::ColumnDataScalar< T > + branchReader + benchmarkUnpack + benchmark + outData + ColumnDataScalar() + connect() + clearColumns() + getEntry() + setData() Node2 columnar::TestUtils ::IColumnData + outputColumns + ~IColumnData() + connect() + clearColumns() + getEntry() + setData() Node2->Node1