public void stopExecutionForGlobalExtensions(SpockExecution spockExecution) {
    for (IGlobalExtension extension : globalExtensions) {
      extension.executionStop(spockExecution);
    }
  }
Maintains a registry of global Spock extensions and their configuration objects,
which can be used to configure other extensions.

@author Peter Niederwieser
spock-core/src/main/java/org/spockframework/runtime/GlobalExtensionRegistry.java