Hi,

the part about the more semantic methods inThe Console Component > Creating a basic Command > Verbosity Levels could include a small note:

The semantic methods (isQuiet,isVerbose, etc.) are only defined in the implementation class, not the interface. So if you typehint against the interface (as you should), your IDE will complain about missing methods.

Maybe a small note there would clear that up? Or is it not necessary? What do you think?