get properties from an object in Groovy, even when the object has an getProperties() method

demo.groovy

def getPropertiesFrom(obj) {
  obj.metaClass.properties.findAll { it.name != 'class' && it.name != 'metaClass' }.inject([:]) { acc, e -> acc[e.name] = e.getProperty(obj); acc }
}

class Foo {
  int getBar() { 42; }
  List getProperties() { [] }
}
def foo = new Foo();
foo.properties;         //=> []
getPropertiesFrom(foo); //=> {bar=42, properties=[]}