code: public EntityDocument getEntityDocumentByTitle(String siteKey, String title)
  			throws MediaWikiApiErrorException, IOException {
  		return getEntityDocumentsByTitle(siteKey, title).get(title);
  	}
docs: Fetches the document for the entity that has a page of the given title on
  the given site. Site keys should be some site identifier known to the
  Wikibase site that is queried, such as "enwiki" for Wikidata.org.
  <p>
  Note: This method will not work properly if a filter is set for sites
  that excludes the requested site.
  
  @param siteKey
  wiki site id, e.g., "enwiki"
  @param title
  string titles (e.g. "Douglas Adams") of requested entities
  @return document for the entity with this title, or null if no such
  document exists
  @throws MediaWikiApiErrorException
  @throws IOException