https://docs.spring.io/spring-framework/docs/5.3.13/javadoc-api/org/springframework/messaging/core/AbstractMessageSendingTemplate.html
AbstractMessageSendingTemplate (Spring Framework 5.3.13 API)
spring frameworkapi
https://docs.spring.io/spring-framework/docs/5.1.9.RELEASE/javadoc-api/org/springframework/messaging/core/AbstractMessageSendingTemplate.html
AbstractMessageSendingTemplate (Spring Framework 5.1.9.RELEASE API)
spring frameworkreleaseapi