This example visualizes the structure of a small React component hierarchy through a static code excerpt, showing how typed props and event handlers are passed between parent and child components. The code uses the Flow type checker to define an `onSubmit` prop as a `Function`, with class `A` passing its `handleSomeEvent` method to component `B` via a prop. The rendering approach is purely textual, relying on the explicit Flow annotations and JSX syntax to illustrate data flow rather than any graphical output. It demonstrates type-safe callback propagation in a React/Flow environment, though no runtime visualization or data processing library appears in the snippet.