litho-core/src/main/java/com/facebook/litho/Component.java
litho-sections-core/src/main/java/com/facebook/litho/sections/Section.java

litho-core/src/main/java/com/facebook/litho/StateHandler.java
litho-sections-core/src/main/java/com/facebook/litho/sections/SectionTree.java

litho-core/src/main/java/com/facebook/litho/Component.java
litho-sections-core/src/main/java/com/facebook/litho/sections/SectionLifecycle.java