NameSpace copy() {
try {
final NameSpace clone = (NameSpace) clone();
clone.thisReference = null;
clone.variables = clone(variables);
clone.methods = clone(methods);
clone.importedClasses = clone(importedClasses);
clone.importedPackages = clone(importedPackages);
clone.importedCommands = clone(importedCommands);
clone.importedObjects = clone(importedObjects);
clone.importedStatic = clone(importedStatic);
clone.names = clone(names);
return clone;
} catch (CloneNotSupportedException e) {
throw new IllegalStateException(e);
}
}