How should the case where sling:resourceType is a multi-valued property be handled?

[Justin Edelson]

I ran into a strange issue today where the sling:resourceType property
was multi-valued on one of my nodes.

This produced an error because this code from JcrItemResource assumes
it is a single-valued property:
        if (node.hasProperty(JcrResourceConstants.SLING_RESOURCE_TYPE_PROPERTY))
{
            result =
node.getProperty(JcrResourceConstants.SLING_RESOURCE_TYPE_PROPERTY).getValue().getString();
        }

I was thinking that if sling:resourceType is multi-valued, the first
value should be used and a warning logged.

WDYT?

Justin