com/android/support/test/espresso/espresso-core/maven-metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<metadata>
  <groupId>com.android.support.test.espresso</groupId>
  <artifactId>espresso-core</artifactId>
  <versioning>
    <release>2.2.1</release>
    <versions>
      <version>2.0</version>
      <version>2.1</version>
      <version>2.2</version>
      <version>2.2.1</version>
    </versions>
    <lastUpdated>20151002201129</lastUpdated>
  </versioning>
</metadata>