code: @Pure
  	public static URL getAttributeURL(Node document, boolean caseSensitive, String... path) {
  		assert document != null : AssertMessages.notNullParameter(0);
  		return getAttributeURLWithDefault(document, caseSensitive, null, path);
  	}
docs: Replies the URL that corresponds to the specified attribute's path.
  
  <p>The path is an ordered list of tag's names and ended by the name of
  the attribute.
  
  @param document is the XML document to explore.
  @param caseSensitive indicates of the {@code path}'s components are case sensitive.
  @param path is the list of and ended by the attribute's name.
  @return the URL in the specified attribute or <code>null</code> if
  it was node found in the document