Since the classes load their imports explicitly we can't use them for
classes which provides utilities to check classpath
* Move imports to fully qualified names in the target utility method
**Cherry-pick to 4.3.x**
Move `JacksonJsonUtils.isPresent` methods to separate `JacksonPresent` class
Polishing
Conflicts:
spring-integration-core/src/main/java/org/springframework/integration/support/converter/ConfigurableCompositeMessageConverter.java
Resolved.
87e8beb9e6