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diff --git a/mockito-kotlin/src/main/kotlin/org/mockito/kotlin/OngoingStubbing.kt b/mockito-kotlin/src/main/kotlin/org/mockito/kotlin/OngoingStubbing.kt
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+/*
+ * The MIT License
+ *
+ * Copyright (c) 2018 Niek Haarman
+ * Copyright (c) 2007 Mockito contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+package org.mockito.kotlin
+
+import org.mockito.Mockito
+import org.mockito.invocation.InvocationOnMock
+import org.mockito.stubbing.Answer
+import org.mockito.stubbing.OngoingStubbing
+import kotlin.DeprecationLevel.ERROR
+import kotlin.reflect.KClass
+
+
+/**
+ * Enables stubbing methods. Use it when you want the mock to return particular value when particular method is called.
+ *
+ * Alias for [Mockito.when].
+ */
+@Suppress("NOTHING_TO_INLINE")
+inline fun <T> whenever(methodCall: T): OngoingStubbing<T> {
+    return Mockito.`when`(methodCall)!!
+}
+
+/**
+ * Sets a return value to be returned when the method is called.
+ *
+ * Alias for [OngoingStubbing.thenReturn].
+ */
+infix fun <T> OngoingStubbing<T>.doReturn(t: T): OngoingStubbing<T> {
+    return thenReturn(t)
+}
+
+/**
+ * Sets consecutive return values to be returned when the method is called.
+ *
+ * Alias for [OngoingStubbing.thenReturn].
+ */
+fun <T> OngoingStubbing<T>.doReturn(t: T, vararg ts: T): OngoingStubbing<T> {
+    return thenReturn(t, *ts)
+}
+
+/**
+ * Sets consecutive return values to be returned when the method is called.
+ */
+inline infix fun <reified T> OngoingStubbing<T>.doReturnConsecutively(ts: List<T>): OngoingStubbing<T> {
+    return thenReturn(
+          ts[0],
+          *ts.drop(1).toTypedArray()
+    )
+}
+
+/**
+ * Sets Throwable objects to be thrown when the method is called.
+ *
+ * Alias for [OngoingStubbing.thenThrow].
+ */
+infix fun <T> OngoingStubbing<T>.doThrow(t: Throwable): OngoingStubbing<T> {
+    return thenThrow(t)
+}
+
+/**
+ * Sets Throwable objects to be thrown when the method is called.
+ *
+ * Alias for [OngoingStubbing.doThrow].
+ */
+fun <T> OngoingStubbing<T>.doThrow(
+    t: Throwable,
+    vararg ts: Throwable
+): OngoingStubbing<T> {
+    return thenThrow(t, *ts)
+}
+
+/**
+ * Sets a Throwable type to be thrown when the method is called.
+ */
+infix fun <T> OngoingStubbing<T>.doThrow(t: KClass<out Throwable>): OngoingStubbing<T> {
+    return thenThrow(t.java)
+}
+
+/**
+ * Sets Throwable classes to be thrown when the method is called.
+ */
+fun <T> OngoingStubbing<T>.doThrow(
+    t: KClass<out Throwable>,
+    vararg ts: KClass<out Throwable>
+): OngoingStubbing<T> {
+    return thenThrow(t.java, *ts.map { it.java }.toTypedArray())
+}
+
+/**
+ * Sets a generic Answer for the method.
+ *
+ * Alias for [OngoingStubbing.thenAnswer].
+ */
+infix fun <T> OngoingStubbing<T>.doAnswer(answer: Answer<*>): OngoingStubbing<T> {
+    return thenAnswer(answer)
+}
+
+/**
+ * Sets a generic Answer for the method using a lambda.
+ */
+infix fun <T> OngoingStubbing<T>.doAnswer(answer: (InvocationOnMock) -> T?): OngoingStubbing<T> {
+    return thenAnswer(answer)
+}