@Nullable
	public static Integer get(@Nonnull JvmClassInfo classInfo) {
		return classInfo.getPropertyValueOrNull(KEY);
	}
@param classInfo
		Class info to link with a version.

@return Version associated with the class,
used as key for {@link WorkspaceResource#getVersionedJvmClassBundles()}.
May be {@code null} if no version association exists.
recaf-core/src/main/java/software/coley/recaf/info/properties/builtin/VersionedClassProperty.java