C BaseTree
C BoxedNodeSettings
C BoxedTree
C CircleNodeSettings
C CircleTree
C LoadOnDemandSettings
C NodeSettings
V d3: {"select": *, "selectAll": *, "event": function, "linkHorizontal": *, "linkVertical": *, ...hierarchy: Object, ...zoom: Object}
T nodeClick: object
Node click event, triggered when a user clicks on a tree node.
