Neos\Flow\ObjectManagement\Configuration\Configuration::setProperties PHP Method

    public function setProperties(array $properties)
    {
        if ($properties === []) {
            $this->properties = [];
        } else {
            foreach ($properties as $value) {
                if ($value instanceof ConfigurationProperty) {
                    $this->setProperty($value);
                } else {
                    throw new InvalidConfigurationException(sprintf('Only ConfigurationProperty instances are allowed, "%s" given', is_object($value) ? get_class($value) : gettype($value)), 1449217567);
                }
            }
        }
    }

 /**
  * @test
  */
 public function passingAnEmptyArrayToSetPropertiesRemovesAllExistingproperties()
 {
     $someProperties = ['prop1' => new Configuration\ConfigurationProperty('prop1', 'simple string'), 'prop2' => new Configuration\ConfigurationProperty('prop2', 'another string')];
     $this->objectConfiguration->setProperties($someProperties);
     $this->assertEquals($someProperties, $this->objectConfiguration->getProperties(), 'The set properties could not be retrieved again.');
     $this->objectConfiguration->setProperties([]);
     $this->assertEquals([], $this->objectConfiguration->getProperties(), 'The properties have not been cleared.');
 }