Description:
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Hello there,

Newly introduced enums come with a reflection API so that we can be aware of what "type" of enum we're dealing with.

Regarding backed enums, I just noticed that we are not able, given an enum class (as opposed to an enum case), to determine if cases will be string or integers.

We can debug that by doing var_dump((new ReflectionEnum(SomeIntegerOrStringBackedEnum::class))->getBackingType()), and the information will be displayed by debugging the corresponding ReflectionNamedType through the `name` property, but that property unfortunately has no accessors. Could it be public?

Use case is for denormalizing from PDO, which can return strings instead of integers depending of user configuration, using `BackedEnum::from` method, by knowing in advance if the target enum expects an int or a string.

Is it something fixable before stable release?

Thanks,
Ben