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