public VariableInstanceInfo persistVariable(String name, Object o,
VariableInstanceInfo oldValue, Environment env) {
VariablePersister persister = getVariablePersister(o);
VariableInstanceInfo variable = null;
if (persister != null) {
variable = persister.persistExternalVariable(name, o, oldValue, env);
}
return variable;
}
@SuppressWarnings("unchecked")