gistfile1.m

- (void)loadFile:(void (^)(NSURL *))finish
{
    if (!fileExistToPath(self.pathToLocalFile))
    {
        self.loadFileHandler        = finish;
        [self.restClient loadFile:self.dropboxFile.path atRev:self.dropboxFile.rev intoPath:self.pathToLocalFile];
    }
    else
    {
        NSURL *urlLocalPath         = [NSURL fileURLWithPath:self.pathToLocalFile];
        BLOCK_SAFE_RUN(finish, urlLocalPath);
    }
}