LoadingResourcesFromClasspathUsingClassloaderClasspathUriResolver

val resolver = new ClassloaderClasspathUriResolver()
val classpathURI = URI.createURI('''«ClasspathUriUtil.CLASSPATH_SCHEME»:/«packagePath»/«fileName»''')
val normalizedURI = resolver.resolve(this, classpathURI) /*resolver.resolve(null, classpathURI)*/
val resource = new ResourceSetImpl().getResource(normalizedUri.trimFragment(), true)
if (resource.diagnostic != Diagnostic.OK_INSTANCE) {
    throw new IllegalStateException("Problem parsing '" + uri + "':\n" +
          Joiner.on('\n').join(resource.getErrors()));
}
resource

def private Diagnostic getDiagnostic(Resource resource) {
        val boolean INCLUDE_WARNINGS = true
        return EcoreUtil.computeDiagnostic(resource, INCLUDE_WARNINGS)
}