..

form => fieldName-symbol or (instanceMethodName-symbol args*)
 Expands into a member access (.) of the first member on the first
argument, followed by the next member on the result, etc. For
instance:
 (.. System (getProperties) (get "os.name"))
 expands to:
 (. (. System (getProperties)) (get "os.name"))
 but is easier to write, read, and understand.