Tour leaders welcoming Dubliners, for example, producing volumes of information

'tour leaders' is the definition.
Although both the answer and definition are plural nouns, I cannot understand how one could define the other.

'welcoming dubliners for example producing volumes of information' is the wordplay.
I cannot really understand how this works, but
'example' could be 'guide' (guide is a kind of example) and 'guide' is located in the answer.
'volumes' could be 'books' (book is a kind of volume) and 'books' is found in the answer.
This accounts for all the letters.
This may be the basis of clue (or it may be nonsense).

Can you help me to learn more?