### Question:
PropertyTranslator { public static Set<software.amazon.cloudformation.stackset.Parameter> translateFromSdkParameters( final Collection<Parameter> parameters) { if (CollectionUtils.isNullOrEmpty(parameters)) return null; return parameters.stream() .map(parameter -> software.amazon.cloudformation.stackset.Parameter.builder() .parameterKey(parameter.parameterKey()) .parameterValue(parameter.parameterValue()) .build()) .collect(Collectors.toSet()); }  static software.amazon.cloudformation.stackset.AutoDeployment translateFromSdkAutoDeployment(
            final AutoDeployment autoDeployment); static AutoDeployment translateToSdkAutoDeployment(
            final software.amazon.cloudformation.stackset.AutoDeployment autoDeployment); static Set<software.amazon.cloudformation.stackset.Parameter> translateFromSdkParameters(
            final Collection<Parameter> parameters); static Set<software.amazon.cloudformation.stackset.Tag> translateFromSdkTags(final Collection<Tag> tags); static StackInstance translateToStackInstance(
            final boolean isSelfManaged,
            final StackInstanceSummary summary,
            final Collection<Parameter> parameters);  }### Answer:
@Test public void test_translateFromSdkParameters_IfIsNull() { assertThat(translateFromSdkParameters(null)).isNull(); }