org-list-separating-blank-lines-number
org-list-separating-blank-lines-number is a compiled Lisp function in `org-list.el
'.
(org-list-separating-blank-lines-number POS STRUCT PREVS)
Return number of blank lines that should separate items in list.
POS is the position of point where `org-list-insert-item' was called.
STRUCT is the list structure. PREVS is the alist of previous
items, as returned by `org-list-prevs-alist'.
Assume point is at item's beginning. If the item is alone, apply
some heuristics to guess the result.