code: function(composer, command, value) {
        var anchors = this.state(composer, command);
        if (anchors) {
          // Selection contains links
          composer.selection.executeAndRestore(function() {
            _removeFormat(composer, anchors);
          });
        } else {
          // Create links
          value = typeof(value) === "object" ? value : { href: value };
          _format(composer, value);
        }
      }
docs: TODO: Use HTMLApplier or formatInline here
  
  Turns selection into a link
  If selection is already a link, it removes the link and wraps it with a <code> element
  The <code> element is needed to avoid auto linking
  
  @example
  // either ...
  wysihtml5.commands.createLink.exec(composer, "createLink", "http://www.google.de");
  // ... or ...
  wysihtml5.commands.createLink.exec(composer, "createLink", { href: "http://www.google.de", target: "_blank" });