Make UriToEntityConverter usable for just <id> not only ..../<resource>/<id>

I'm wondering what is this safe-check for in UriToEntityConverter.java How about removing it?

if (parts.length < 2) {
			throw new ConversionFailedException(sourceType, targetType, source, new IllegalArgumentException(
					"Cannot resolve URI " + uri + ". Is it local or remote? Only local URIs are resolvable."));
		}

IMHO it's unnecessary. UriToEntityConverter just uses the last part of the URI and deduces type from targetType not uri path. So we could say that by design it assumes URI is relative to targetType's resource, however it forbids short URI imposing full resource path. In result:

http://localhost:8080/entity/1 is proper URI (although only "1" is actually taken from this)
/entity/1 is also a proper URI
1 is not resolvable URI anymore

Why? Such short relative URIs containing just ID are actually very useful and used by many frameworks.