public java.util.List<java.lang.Long> getOutsideOrgProjectNumbersList() {
        outsideOrgProjectNumbers_.makeImmutable();
        return outsideOrgProjectNumbers_;
      }
<pre>
Optional. Subset of project numbers which are not in the same
organization.
</pre>

<code>
repeated int64 outside_org_project_numbers = 3 [(.google.api.field_behavior) = OPTIONAL];
</code>

@return A list containing the outsideOrgProjectNumbers.
java-storageinsights/proto-google-cloud-storageinsights-v1/src/main/java/com/google/cloud/storageinsights/v1/DatasetConfig.java