Assert.doesNotContain(String, String, String)
Assert.hasLength(String, String)
Assert.hasText(String, String)
Assert.isNull(Object, String)
Assert.isTrue(boolean, String)
Assert.noNullElements(Object[], String)
Assert.notEmpty(Object[], String)
Assert.notNull(Object, String)
Assert.state(boolean, String)
ClassUtils.getInterfaceMethodIfPossible(Method, Class)
hasLength(String)
hasText(String)
ObjectUtils.isEmpty(Object)
LinkedHashSet
Locale.toLanguageTag()