code: public static String[] getDataTypeURIs(String datatypeKey)
      {
         	Set<String> alluris = new HashSet<String>();
      	Datatype datatype = getDatatype(datatypeKey);
      	for(Uris uris : datatype.getUris()) {
      		for(Uri uri : uris.getUri()) {
      			alluris.add(uri.getValue());
      		}
      	}
      	return alluris.toArray(ARRAY_OF_STRINGS);
      }
docs: Retrieves all the URIs of a data type, including all the deprecated ones
  (examples: "urn:miriam:uniprot", "http://www.uniprot.org/", "urn:lsid:uniprot.org:uniprot", ...).
  
  @param datatypeKey name (or synonym), ID, or URI (URN or URL) of the data type (examples: "ChEBI", "UniProt")
  @return all the URIs of a data type (including the deprecated ones)
  
  @throws IllegalArgumentException when datatype not found