code: <T extends ListBuffer<? super JCExpressionStatement>> T moreStatementExpressions(int pos,
                                                                      JCExpression first,
                                                                      T stats) {
          // This Exec is a "StatementExpression"; it subsumes no terminating token
          stats.append(toP(F.at(pos).Exec(checkExprStat(first))));
          while (token.kind == COMMA) {
              nextToken();
              pos = token.pos;
              JCExpression t = parseExpression();
              // This Exec is a "StatementExpression"; it subsumes no terminating token
              stats.append(toP(F.at(pos).Exec(checkExprStat(t))));
          }
          return stats;
      }
docs: MoreStatementExpressions = { COMMA StatementExpression }