/// <summary>
/// Reads text file
/// </summary>
/// <param name="file">the file object to read</param>
/// <param name="encoding">the encoding to use to encode the file's content. Default is UTF8.</param>
/// <example>
/// usage
/// <code>
/// function win(file) {
/// var reader = new FileReader();
/// reader.onloadend = function(evt) {
/// console.log("read success");
/// console.log(evt.target.result);
/// };
/// reader.readAsText(file);
///};
///var fail = function(evt) {
/// console.log(error.code);
///};
///entry.file(win, fail);
/// </code>
/// </example>
public void readAsText(File file, JsString encoding) { }
/// <summary>
/// Read file and return data as a base64 encoded data url.
/// </summary>
/// <param name="file"></param>
/// <returns></returns>
/// <example>
/// usage
/// <code>
/// function win(file) {
/// var reader = new FileReader();
/// reader.onloadend = function(evt) {
/// console.log("read success");
/// console.log(evt.target.result);
/// };
/// reader.readAsDataURL(file);
///};
///var fail = function(evt) {
/// console.log(error.code);
///};
///entry.file(win, fail);
/// </code>
/// </example>
public JsString readAsText(File file) { return null; }