code: public static void fillArgs(String operator, Val<Expression>[] args, ExpressionList<?> et) {
          for (Val<Expression> val : args) {
              if (val.object() instanceof Expression) {
                  et.add(val.expr());
              } else {
                  throw new QuerySyntaxException(Messages.get("dsl.arguments.error3", operator));
              }
          }
      }
docs: <p>fillArgs.</p>
  
  @param operator a {@link java.lang.String} object.
  @param args     an array of {@link ameba.db.dsl.QueryExprMeta.Val} objects.
  @param et       a {@link io.ebean.ExpressionList} object.