Add groupingBy and eachCount sample.

libraries/stdlib/common/src/generated/_Arrays.kt

@@ -4448,6 +4448,8 @@ public header inline fun <K, V, M : MutableMap<in K, MutableList<V>>> CharArray.
 /**
  * Creates a [Grouping] source from an array to be used later with one of group-and-fold operations
  * using the specified [keySelector] function to extract a key from each element.
+ * 
+ * @sample samples.collections.Collections.Transformations.groupingByEachCount
  */
 @SinceKotlin("1.1")
 public header inline fun <T, K> Array<out T>.groupingBy(crossinline keySelector: (T) -> K): Grouping<T, K>

libraries/stdlib/common/src/generated/_Collections.kt

@@ -590,6 +590,8 @@ public header inline fun <T, K, V, M : MutableMap<in K, MutableList<V>>> Iterabl
 /**
  * Creates a [Grouping] source from a collection to be used later with one of group-and-fold operations
  * using the specified [keySelector] function to extract a key from each element.
+ * 
+ * @sample samples.collections.Collections.Transformations.groupingByEachCount
  */
 @SinceKotlin("1.1")
 public header inline fun <T, K> Iterable<T>.groupingBy(crossinline keySelector: (T) -> K): Grouping<T, K>

libraries/stdlib/common/src/generated/_Sequences.kt

@@ -362,6 +362,8 @@ public header inline fun <T, K, V, M : MutableMap<in K, MutableList<V>>> Sequenc
 /**
  * Creates a [Grouping] source from a sequence to be used later with one of group-and-fold operations
  * using the specified [keySelector] function to extract a key from each element.
+ * 
+ * @sample samples.collections.Collections.Transformations.groupingByEachCount
  */
 @SinceKotlin("1.1")
 public header inline fun <T, K> Sequence<T>.groupingBy(crossinline keySelector: (T) -> K): Grouping<T, K>

libraries/stdlib/common/src/generated/_Strings.kt

@@ -425,6 +425,8 @@ public header inline fun <K, V, M : MutableMap<in K, MutableList<V>>> CharSequen
 /**
  * Creates a [Grouping] source from a char sequence to be used later with one of group-and-fold operations
  * using the specified [keySelector] function to extract a key from each character.
+ * 
+ * @sample samples.collections.Collections.Transformations.groupingByEachCount
  */
 @SinceKotlin("1.1")
 public header inline fun <K> CharSequence.groupingBy(crossinline keySelector: (Char) -> K): Grouping<Char, K>