The parent node's lock, the parent node will lock 'isParent' attribute to true.
Default: false
true means: lock the parent node, and if remove all of the parent node's child nodes, its 'isParent' attribute still keep to be true..
false means: don't lock the parent node, and if remove all of the parent node's child nodes, its 'isParent' attribute will change to be false..
var setting = {
data: {
keep: {
parent: true
}
}
};
......