code: def setup_releasetype_buttons(self, ):
          
          # we insert the radiobuttons instead of adding them
          # because there is already a spacer in the layout to
          # keep the buttons to the left. To maintain the original order
          # we insert them all to position 0 but in reversed order
          for rt in reversed(self._releasetypes):
              rb = QtGui.QRadioButton(rt)
              self.releasetype_hbox.insertWidget(0, rb)
              self._releasetype_button_mapping[rt] = rb
          # set first radiobutton checked
          if self._releasetypes:
              rt = self._releasetypes[0]
              rb = self._releasetype_button_mapping[rt]
              rb.setChecked(True)
          # if there is only one releasetype hide the buttons
          if len(self._releasetypes) == 1:
              self.releasetype_widget.setVisible(False)
docs: Create a radio button for every releasetype
  
          :returns: None
          :rtype: None
          :raises: None