When @EnableHypermediaSupport has no types, only enable user-defined media types.

[gregturn]

If an empty list of hypermedia types is provided, activate all of them.

Also consider making an empty list the default value for this annotation.

[gregturn]

When using an empty list, the old code had this:

if (types.isEmpty()) {
	return configurationProviders.toArray(new String[0]);
}

This was incorrect, and would produce an ArrayStoreException.

Instead, the purpose is to enable ALL the MediaTypeConfigurationProvider found in the application context, like this:

if (types.isEmpty()) {
	return configurationProviders.stream() //
			.map(MediaTypeConfigurationProvider::getConfiguration) //
			.map(Class::getName) //
			.toArray(String[]::new);
}

[gregturn]

Since a Stream must be created in either situation, this may be preferable:

return configurationProviders.stream() //
		.filter(it -> {
			// If there are no types, then let them all through
			if (types.isEmpty()) {
				return true;
			}
			// Filter the ones supporting the given media types
			return it.supportsAny(types);
		}) //
		.map(MediaTypeConfigurationProvider::getConfiguration) //
		.map(Class::getName) //
		.toArray(String[]::new);

[gregturn]

Duplicates #1015 .