### Question:
ExecutionContextImpl implements ExecutionContext, Serializable { public static boolean isRestrictedRuntimeExecutionContext(ExecutionContext context) { return checkIfAllAttributesExist(context, EXECUTE_OVERRIDE_ATTR, RESTRICTED_CONTEXT_ATTR); } ExecutionContextImpl();  ExecutionContextImpl(Locale locale); static ExecutionContext getRuntimeExecutionContext(ExecutionContext originalContext); static ExecutionContext getRuntimeExecutionContext(); static ExecutionContext getRestrictedRuntimeExecutionContext(ExecutionContext originalContext); static ExecutionContext getRestrictedRuntimeExecutionContext(); static boolean isRestrictedRuntimeExecutionContext(ExecutionContext context); static ExecutionContext create(Locale locale, TimeZone timeZone, Object...attrs); List getAttributes(); void setAttributes(List attrs); Locale getLocale(); void setLocale(Locale locale); TimeZone getTimeZone(); void setTimeZone(TimeZone timeZone); @Override boolean equals(Object o); @Override int hashCode(); static final String EXECUTE_OVERRIDE; }### Answer:
@Test public void isRestrictedRuntimeExecutionContext_contextIsNull_returnFalse() { assertFalse(ExecutionContextImpl.isRestrictedRuntimeExecutionContext(null)); }