anchor.diff:  Any code under `buildSrc` should use a package similar to application code.
   Optionally, the `buildSrc` directory can host a build script if additional configuration is needed (e.g. to apply plugins or to declare dependencies).
   
  +====
  +[.multi-language-sample]
  +=====
  +[source,groovy]
   ----
   .
   ├── build.gradle
  
positive.code: │                       └── DeploymentPluginTest.java
  └── settings.gradle
  ----
  
  == Declare properties in `gradle.properties` file
  
  
negative.code: 
  The following source tree demonstrates how to separate unit from integration tests in a Java-based project.
  
  ====
  [.multi-language-sample]
  =====
  [source,groovy]
  ----
  .
  ├── build.gradle
  