whole_func_string: function writeBuffer(buffer) {
    var written = fs.writeSync(this.fd, buffer, 0, buffer.length, null);
    fs.fsyncSync(this.fd);
    return written;
  }
func_code_string: function writeBuffer(buffer) {
    var written = fs.writeSync(this.fd, buffer, 0, buffer.length, null);
    fs.fsyncSync(this.fd);
    return written;
  }
func_documentation_string: Write a buffer synchronously to the file and flush to disk.