code: function closeInlineWidget(hostEditor, inlineWidget) {
          // If widget has focus, return it to the hostEditor & move the cursor to where the inline used to be
          if (inlineWidget.hasFocus()) {
              // Place cursor back on the line just above the inline (the line from which it was opened)
              // If cursor's already on that line, leave it be to preserve column position
              var widgetLine = hostEditor._codeMirror.getLineNumber(inlineWidget.info.line);
              var cursorLine = hostEditor.getCursorPos().line;
              if (cursorLine !== widgetLine) {
                  hostEditor.setCursorPos({ line: widgetLine, pos: 0 });
              }
  
              hostEditor.focus();
          }
  
          return hostEditor.removeInlineWidget(inlineWidget);
      }
docs: Removes the given widget UI from the given hostEditor (agnostic of what the widget's content
  is). The widget's onClosed() callback will be run as a result.
  @param {!Editor} hostEditor The editor containing the widget.
  @param {!InlineWidget} inlineWidget The inline widget to close.
  @return {$.Promise} A promise that's resolved when the widget is fully closed.