Refactoring: parentNode --> parentnode
Refactoring: newSet --> newset
Refactoring: copyClass --> copyclass
Formatting
Style
Refactoring: childNode --> childnode
Refactoring: newParent, newName --> newparent, newname
Refactoring: ptFile --> ptfile
Refactoring: targetNode --> targetnode
Refactoring: newParentPath --> newparentpath
Refactoring: parentPath --> parentpath
Refactoring: className --> classname