debugScrapeStoryMetadata will return the information that Coral was able to scrape from the given URL. No data will be saved related to the Story based on this scrape.
debugScrapeStoryMetadata( url: String!): StoryMetadata
StoryMetadata stores all the metadata that is scraped using the scraping tools inside Coral. Coral utilizes metascraper which uses a variety of filters derived from The Open Graph Protocol to scan for metadata on the page.