According to DisposableBeanAdapter.inferDestroyMethodIfNecessary:

If the current value of the given beanDefinition's "destroyMethodName" property is AbstractBeanDefinition.INFER_METHOD, then attempt to infer a destroy method. Candidate methods are currently limited to public, no-arg methods named "close" or "shutdown" (whether declared locally or inherited). The given BeanDefinition's "destroyMethodName" is updated to be null if no such method is found, otherwise set to the name of the inferred method. This constant serves as the default for the @bean#destroyMethod attribute and the value of the constant may also be used in XML within the or attributes.
Also processes the java.io.Closeable and AutoCloseable interfaces, reflectively calling the "close" method on implementing beans as well.

checkTmpStore implements AutoCloseable, will be auto-closed.