code: function updatePropertyConfiguration() {
  
    // Fetch extensions implementing .updatePropertyConfiguration(...) method
    var extensions = _lodash2.default.filter(this.extensions, function (extension) {
      return extension.implemented.updatePropertyConfiguration;
    });
  
    // Create a proxy .updatePropertyConfiguration(...) method
    this.updatePropertyConfiguration = function (propertyConfiguration) {
      // Execute all extensions' .updatePropertyConfiguration(...) method
      _lodash2.default.forEach(extensions, function (extension) {
        extension.updatePropertyConfiguration(propertyConfiguration);
      });
    };
  }
docs: Creates a method used to call all extensions' .updatePropertyConfiguration(...) method when needed (if the extension is implementing it)