RPC spec generator does not add parameter descriptors for the enum data type

[NicoleYarroch]

Bug Report

RPC spec generator does not add parameter descriptors for the enum data type which is an issue when the enum has a default value.

For example, the SoftButton systemAction parameter is an enum with a defvalue set to DEFAULT_ACTION

<struct name="SoftButton" since="2.0">
    ...
    <param name="systemAction" type="SystemAction" defvalue="DEFAULT_ACTION" mandatory="false">
        <description>Parameter indicating whether selecting a SoftButton shall call a specific system action.  This is intended to allow Notifications to bring the callee into full / focus; or in the case of persistent overlays, the overlay can persist when a SoftButton is pressed.</description>
    </param>
</struct>

Reproduction Steps

1. Run the generator script in the "generator" folder of the library.

Expected Behavior

It should generate the following:

/**
 * Parameter indicating whether selecting a SoftButton shall call a specific system action. This is intended to
 * allow Notifications to bring the callee into full / focus; or in the case of persistent overlays, the overlay can
 * persist when a SoftButton is pressed.
 * {"default_value": DEFAULT_ACTION}
 */
@property (nullable, strong, nonatomic) SDLSystemAction systemAction;

Observed Behavior

It does not add the default value to the description:

/**
 * Parameter indicating whether selecting a SoftButton shall call a specific system action. This is intended to
 * allow Notifications to bring the callee into full / focus; or in the case of persistent overlays, the overlay can
 * persist when a SoftButton is pressed.
 */
@property (nullable, strong, nonatomic) SDLSystemAction systemAction;

OS & Version Information

• iOS Version: n/a
• SDL iOS Version: 6.7
• Testing Against: n/a