in src/components/TypeTree.tsx [43:51]
readonly onExpanded: (fullName: string) => void
// Called when the user requests a type to be collapsed
readonly onCollapse: (fullName: string) => void
// Called when the user requests a type to be selected
readonly onSelected: (fullName: string) => void
}
// A component that renders a Protobuf type hierarchy as a tree
class TypeTree extends React.PureComponent<IProps> {