Property definitions

nitc $ ErrorNotProperty :: defaultinit
# The MEntity is not a MProperty or a MClassDef
class ErrorNotProperty
	super CmdError

	# MEntity provided
	var mentity: MEntity

	redef fun to_s do return "`{mentity.full_name}` is not a property"
end
src/doc/commands/commands_usage.nit:216,1--224,3