“->”(箭头)在格拉德尔依赖图中意味着什么？

我正在尝试运行一些 Android 测试，但是编译器抱怨存在多个 dex 文件。

Multiple dex files define Lorg/hamcrest/MatcherAssert;

So I'm trying to filter duplicated dependencies: $ ./gradlew -q dependencies app:dependencies --configuration androidTestCompile

然而，我得到了以下输出:

------------------------------------------------------------
Project :app
------------------------------------------------------------


androidTestCompile - Classpath for compiling the androidTest sources.
+--- org.mockito:mockito-core:1.9.5
|    +--- org.hamcrest:hamcrest-core:1.1 -> 1.3
|    \--- org.objenesis:objenesis:1.0 -> 2.1
+--- com.google.dexmaker:dexmaker-mockito:1.2
|    +--- com.google.dexmaker:dexmaker:1.2
|    \--- org.mockito:mockito-core:1.9.5 (*)
+--- com.android.support.test.espresso:espresso-core:2.0
|    +--- com.squareup:javawriter:2.1.1
|    +--- org.hamcrest:hamcrest-integration:1.1
|    |    \--- org.hamcrest:hamcrest-core:1.1 -> 1.3
|    +--- org.hamcrest:hamcrest-library:1.1
|    |    \--- org.hamcrest:hamcrest-core:1.1 -> 1.3
|    +--- javax.inject:javax.inject:1
|    +--- com.android.support.test.espresso:espresso-idling-resource:2.0
|    +--- com.android.support.test:testing-support-lib:0.1
|    |    \--- junit:junit-dep:4.10
|    |         \--- org.hamcrest:hamcrest-core:1.1 -> 1.3
|    +--- com.google.code.findbugs:jsr305:2.0.1
|    +--- javax.annotation:javax.annotation-api:1.2
|    \--- org.hamcrest:hamcrest-core:1.1 -> 1.3
+--- com.android.support.test:testing-support-lib:0.1 (*)
+--- org.powermock:powermock-module-junit4:1.5.6
|    +--- junit:junit:4.11
|    |    \--- org.hamcrest:hamcrest-core:1.3
|    \--- org.powermock:powermock-module-junit4-common:1.5.6
|         +--- junit:junit:4.4 -> 4.11 (*)
|         +--- org.powermock:powermock-core:1.5.6
|         |    +--- org.powermock:powermock-reflect:1.5.6
|         |    |    \--- org.objenesis:objenesis:2.1
|         |    \--- org.javassist:javassist:3.18.2-GA
|         \--- org.powermock:powermock-reflect:1.5.6 (*)
\--- org.powermock:powermock-api-mockito:1.5.6
\--- org.powermock:powermock-api-support:1.5.6
+--- org.powermock:powermock-core:1.5.6 (*)
\--- org.powermock:powermock-reflect:1.5.6 (*)


(*) - dependencies omitted (listed previously)

I'm confused as what the arrows (->) mean. What do they mean?