code: public void setOfflineErrors(com.google.api.ads.admanager.axis.v201808.OfflineError[] offlineErrors) {
          this.offlineErrors = offlineErrors;
      }
docs: Sets the offlineErrors value for this Proposal.
  
  @param offlineErrors   * Errors that occurred during offline processes. If any errors
  occur during an offline process,
  such as reserving inventory, this field will be populated
  with those errors, otherwise this
  field will be null.
  This attribute is read-only.