So I end as an inventor (6)

I believe the answer is:
edison
'an inventor' is the definition.
(Edison is an example)
'so i end' is the wordplay.
'so i end' can be anagrammed to 'EDISON'.
Though, I am not clear how the anagram is indicated.
'as' is the link.
Can you help me to learn more?
(Other definitions for edison that I've seen before include "scientist" , "He came up with microphone" , "Thomas Alva ......, great American inventor" , "inventive sort" , "Inventor's" .)
