Add explode_split to documentation

black.py

@@ -1984,13 +1984,14 @@ def append_to_line(leaf: Leaf) -> Iterator[Line]:
 def explode_split(
     line: Line, py36: bool = False, omit: Collection[LeafID] = ()
 ) -> Iterator[Line]:
-    """Split by RHS and immediately split contents by a delimiter."""
+    """Split by rightmost bracket and immediately split contents by a delimiter."""
     new_lines = list(right_hand_split(line, py36, omit))
     if len(new_lines) != 3:
         yield from new_lines
         return
 
     yield new_lines[0]
+
     try:
         yield from delimiter_split(new_lines[1], py36)
     except CannotSplit:

docs/reference/reference_functions.rst

@@ -60,6 +60,8 @@ Split functions
 
 .. autofunction:: black.delimiter_split
 
+.. autofunction:: black.explode_split
+
 .. autofunction:: black.left_hand_split
 
 .. autofunction:: black.right_hand_split