public DescribeRouteTablesResult withRouteTables(RouteTable... routeTables) {
        if (this.routeTables == null) {
            setRouteTables(new com.amazonaws.internal.SdkInternalList<RouteTable>(routeTables.length));
        }
        for (RouteTable ele : routeTables) {
            this.routeTables.add(ele);
        }
        return this;
    }
<p>
Information about the route tables.
</p>
<p>
<b>NOTE:</b> This method appends the values to the existing list (if any). Use
{@link #setRouteTables(java.util.Collection)} or {@link #withRouteTables(java.util.Collection)} if you want to
override the existing values.
</p>

@param routeTables
       Information about the route tables.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-ec2/src/main/java/com/amazonaws/services/ec2/model/DescribeRouteTablesResult.java