def METHOD_NAME(self):
    import SampleData
    self.log.insertHtml('<b>Requesting downloading MRHead')
    self.log.repaint()
    mrHeadVolume = SampleData.downloadSample("MRHead")
    if mrHeadVolume:
        self.log.insertHtml('<i>finished.</i>\n')
        self.log.insertPlainText('\n')
        self.log.repaint()
    else:
        self.log.insertHtml('<b>Download failed!</b>\n')
        self.log.insertPlainText('\n')
        self.log.repaint()
    self.log.ensureCursorVisible()