protected ClassDescriptorImpl( Class javaClass )
public ClassDescriptorImpl( Class javaClass, FieldDescriptor[] fields, FieldDescriptor[] identities, ClassDescriptor extend, ClassDescriptor depend, AccessMode accessMode ) throws MappingException
    protected ClassDescriptorImpl( Class javaClass )    {        _javaClass = javaClass;        _extends = null;        _fields = null;        _identities = null;        _depends = null;        _accessMode = null;    }