Gets a collection containing fully qualified type names of classes implementating IBuildListener that should be added to the project as listeners.
[Visual Basic]
<CommandLineArgument(Name:="listener", ShortName:="null", Description:="Add an instance of class as a project listener", Type:=CommandLineArgumentTypes.MultipleUnique)>
[CommandLineArgument(Name="listener", ShortName="null", Description="Add an instance of class as a project listener", Type=CommandLineArgumentTypes.MultipleUnique)]