@Override protected Properties setupProperties() { Properties overrides = super.setupProperties(); String windowsSpec = setIfTestSystemPropertyPresent(overrides, provider + ".windows-template"); if (Strings.emptyToNull(windowsSpec) != null) { windowsTemplate = TemplateBuilderSpec.parse(windowsSpec); } String windowsOwner = setIfTestSystemPropertyPresent(overrides, provider + ".windows-owner"); if (Strings.emptyToNull(windowsOwner) != null) { overrides.setProperty(PROPERTY_EC2_AMI_OWNERS, windowsOwner); } return overrides; }