public Parameter withSupportedEngineModes(String... supportedEngineModes) {
        if (this.supportedEngineModes == null) {
            setSupportedEngineModes(new com.amazonaws.internal.SdkInternalList<String>(supportedEngineModes.length));
        }
        for (String ele : supportedEngineModes) {
            this.supportedEngineModes.add(ele);
        }
        return this;
    }
<p>
The valid DB engine modes.
</p>
<p>
<b>NOTE:</b> This method appends the values to the existing list (if any). Use
{@link #setSupportedEngineModes(java.util.Collection)} or {@link #withSupportedEngineModes(java.util.Collection)}
if you want to override the existing values.
</p>

@param supportedEngineModes
       The valid DB engine modes.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-rds/src/main/java/com/amazonaws/services/rds/model/Parameter.java