getChildTrees = (childTrees, vTree) => {
  ComponentTreeCache.forEach((parentTree, childTree) => {
    if (parentTree === vTree) {
      ComponentTreeCache.delete(childTree);

      if (typeof childTree.rawNodeName !== 'function') {
        childTrees.push(childTree);
      }
      else {
        getChildTrees(childTrees, childTree);
      }
    }
  });
}
Finds all VTrees associated with a component.

@param {VTree[]} childTrees
@param {VTree} vTree