message: docs(platform-server): add doc string for PlatformOptions
diff: @@ -18,9 +18,26 @@ import {INITIAL_CONFIG} from './tokens';
  const parse5 = require('parse5');
  +/**
  + * Options used to configure the server Platform instance that is created in {@link renderModule}
  + * and {@link renderModuleFactory}.
  + *
  + * @experimental
  + */
  export interface PlatformOptions {
  + /**
  + * The full document HTML of the page to render as a string.
  + */
  document?: string;
  +
  + /**
  + * The URL for the current render request.
  + */
  url?: string;
  +
  + /**
  + * Platform level providers for the current render request.
  + */
  extraProviders?: Provider[];
  }
  