public function build():CommandProxy
	 Builds the target command, applying all configurations specified
	 through this builder instance.
	 
	 
Returns | CommandProxy — the command proxy will all configuration of this builder applied
	  | 
 public function execute():CommandProxy
	 Builds and executes the target command.
	 A shortcut for calling build().execute().
	 In case of asynchronous commands the returned proxy
	 will still be active. In case of synchronous commands
	 it will already be completed, so that adding event
	 listeners won't have any effect.
	 
	 
Returns | CommandProxy — the command that was built and executed by this builder
	  |