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diff --git a/kotlinx-coroutines-core/jvm/test/guide/example-flow-18.kt b/kotlinx-coroutines-core/jvm/test/guide/example-flow-18.kt
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+++ b/kotlinx-coroutines-core/jvm/test/guide/example-flow-18.kt
@@ -0,0 +1,29 @@
+/*
+ * Copyright 2016-2019 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license.
+ */
+
+// This file was automatically generated from coroutines-guide.md by Knit tool. Do not edit.
+package kotlinx.coroutines.guide.flow18
+
+import kotlinx.coroutines.*
+import kotlinx.coroutines.flow.*
+import kotlin.system.*
+
+fun foo(): Flow<Int> = flow {
+    for (i in 1..3) {
+        delay(100) // pretend we are asynchronously waiting 100 ms
+        emit(i) // emit next value
+    }
+}
+
+fun main() = runBlocking<Unit> { 
+    val time = measureTimeMillis {
+        foo()
+            .conflate() // conflate emissions, don't process each one
+            .collect { value -> 
+                delay(300) // pretend we are processing it for 300 ms
+                println(value) 
+            } 
+    }   
+    println("Collected in $time ms")
+}