docs: private AbstractExpression parseTableCondition(VoltXMLElement tableScan,
              String joinOrWhere) {
          AbstractExpression condExpr = null;
          for (VoltXMLElement childNode : tableScan.children) {
              if ( ! childNode.name.equalsIgnoreCase(joinOrWhere)) {
                  continue;
              }
              assert(childNode.children.size() == 1);
              assert(condExpr == null);
              condExpr = parseConditionTree(childNode.children.get(0));
              assert(condExpr != null);
              ExpressionUtil.finalizeValueTypes(condExpr);
              condExpr = ExpressionUtil.evaluateExpression(condExpr);
              // If the condition is a trivial CVE(TRUE) (after the evaluation) simply drop it
              if (ConstantValueExpression.isBooleanTrue(condExpr)) {
                  condExpr = null;
              }
          }
          return condExpr;
      }