object/src/main/java/com/orientechnologies/orient/object/db/OObjectDatabaseTx.java
public int getVersion(final Object iPojo) {
    checkOpenness();
    final ODocument record = getRecordByUserObject(iPojo, false);
    if (record != null)
      return record.getVersion();

    return OObjectSerializerHelper.getObjectVersion(iPojo);
  }
public int getVersion(final Object iPojo) {
    checkOpenness();
    final ODocument record = getRecordByUserObject(iPojo, false);
    if (record != null)
      return record.getVersion();

    return OObjectSerializerHelper.getObjectVersion(iPojo);
  }
Returns the version number of the object. Version starts from 0 assigned on creation.

@param iPojo User object