Change use of .elems on Set/Bag/Mix to new method .total

S32-setting-library/Containers.pod

@@ -1215,7 +1215,7 @@ A mutable Set container, represented as C<QuantHash[Bool,False]>.
 A collection of values or objects that work just like sets, except
 that they need not be unique.  The count of each value or object is
 represented by an associative mapping from each key value/object to its
-replication number.  The C<.elems> method returns the sum of all
+replication number.  The C<.total> method returns the sum of all
 replication values.
 
 Sets and bags do not flatten into list context, nor do the constructors
@@ -1281,7 +1281,7 @@ in the case of bag types).  C<SetHash> and C<MixBag> are derived
 from this type, but constrain their hash values to be C<Bool> and
 C<UInt>, respectively.  A C<QuantHash> automatically deletes any key
 whose corresponding value goes to the default value for the hash.
-For any C<QuantHash>, the C<.elems> methods returns the current sum
+For any C<QuantHash>, the C<.total> methods returns the current sum
 of the values, which the C<QuantHash> must either track or compute
 on demand.  Tracking is preferable for efficient implementation of
 C<.pick> and C<.grab>.
@@ -1309,7 +1309,7 @@ only from the temporary copy.)
 
 Grabbing decrements the grabbed
 key's replication value by one (deleting the key when it goes to 0).
-By definition, C<.elems> of the bag also decreases by one, so the
+By definition, C<.total> of the bag also decreases by one, so the
 probabilities stay consistent through subsequent grab operations.
 
 With the C<.grabpairs> version, the replication value of the picked