Unnecessary stubbings detected in InstanceConfigurationTest

[MRamonLeon]

While running PCT to guarantee the compatibility of the google-compute-engine-4.3.0 with other plugins installed, the CI fails with the error message provided.

It would be great to get rid of this problem because it's breaking mvn test

Thank you.

Unnecessary stubbings detected in test class: InstanceConfigurationTest
Clean & maintainable test code requires zero unnecessary code.
Following stubbings are unnecessary (click to navigate to relevant line of code):
  1. -> at com.google.jenkins.plugins.computeengine.InstanceConfigurationTest.init(InstanceConfigurationTest.java:160)
  2. -> at com.google.jenkins.plugins.computeengine.InstanceConfigurationTest.init(InstanceConfigurationTest.java:162)
  3. -> at com.google.jenkins.plugins.computeengine.InstanceConfigurationTest.init(InstanceConfigurationTest.java:164)
  4. -> at com.google.jenkins.plugins.computeengine.InstanceConfigurationTest.init(InstanceConfigurationTest.java:167)
  5. -> at com.google.jenkins.plugins.computeengine.InstanceConfigurationTest.init(InstanceConfigurationTest.java:169)
  6. -> at com.google.jenkins.plugins.computeengine.InstanceConfigurationTest.init(InstanceConfigurationTest.java:171)
  7. -> at com.google.jenkins.plugins.computeengine.InstanceConfigurationTest.init(InstanceConfigurationTest.java:173)
Please remove unnecessary stubbings or use 'lenient' strictness. More info: javadoc for UnnecessaryStubbingException class.