The ButtonBlockRemove component represents a button to remove the block
element holding the caret in the editor.
Note: this component does not use AlloyEditorButton.ButtonCommand mixin
because after executing the eZRemoveBlock command we don't want the
actionPerformed event to be fired.
Executes the configured command.
The command that should be executed.
The label of the button
Indicates that the command may cause the editor to have a different.