code: public DrawerItem setTextMode(int textMode) {
          if (textMode != SINGLE_LINE && textMode != TWO_LINE && textMode != THREE_LINE) {
              throw new IllegalArgumentException("Image mode must be either SINGLE_LINE, TWO_LINE or THREE_LINE.");
          }
          mTextMode = textMode;
          notifyDataChanged();
          return this;
      }
docs: Sets a text mode to the drawer item
  
  @param textMode Text mode to set