Add sample for Map.asSequence (#5055)

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

@@ -584,6 +584,8 @@ public inline fun <K, V> Map<out K, V>.asIterable(): Iterable<Map.Entry<K, V>> {
 
 /**
  * Creates a [Sequence] instance that wraps the original map returning its entries when being iterated.
+ * 
+ * @sample samples.collections.Sequences.Building.sequenceFromMap
  */
 public fun <K, V> Map<out K, V>.asSequence(): Sequence<Map.Entry<K, V>> {
     return entries.asSequence()

libraries/stdlib/samples/test/samples/collections/sequences.kt

@@ -75,6 +75,14 @@ class Sequences {
             assertPrints(sequence.joinToString(), "a, b, c")
         }
 
+        @Sample
+        fun sequenceFromMap() {
+            val map = mapOf(1 to "x", 2 to "y", -1 to "zz")
+            val sequence = map.asSequence()
+
+            assertPrints(sequence.joinToString(), "1=x, 2=y, -1=zz")
+        }
+
         @Sample
         fun sequenceFromIterator() {
             val array = arrayOf(1, 2, 3)

libraries/tools/kotlin-stdlib-gen/src/templates/Sequence.kt

@@ -43,7 +43,7 @@ object SequenceOps : TemplateGroupBase() {
             Creates a [Sequence] instance that wraps the original ${f.collection} returning its ${f.element.pluralize()} when being iterated.
             """
         }
-        specialFor(ArraysOfPrimitives, ArraysOfObjects, Iterables) {
+        specialFor(ArraysOfPrimitives, ArraysOfObjects, Iterables, Maps) {
             sample("samples.collections.Sequences.Building.sequenceFrom${f.doc.collection.capitalize()}")
         }