Source custSel2 = custSel.selectValues(new String[]
{"SHIPMENTS_AW::SHIP_TO_AW::60",
"SHIPMENTS_AW::SHIP_TO_AW::62"});
// Join the selection to itself, using the subset as the comparison.
Source result1 = custSel.join(custSel, custSel2, true);
// Join the selection to the result of the value method, using the subset
// as the comparison.
Source result2 = custSel.join(custSel.value(), custSel2, true);