code: public com.google.api.ads.admanager.axis.v201811.DateTime getLastReservationDateTime() {
          return lastReservationDateTime;
      }
docs: Gets the lastReservationDateTime value for this ProposalLineItem.
  
  @return lastReservationDateTime   * The last {@link DateTime} when the {@link ProposalLineItem}
  reserved inventory.
  This attribute is read-only.