public Builder mergeSourceProjects(
        com.google.cloud.storageinsights.v1.DatasetConfig.SourceProjects value) {
      if (sourceProjectsBuilder_ == null) {
        if (sourceOptionsCase_ == 7
            && sourceOptions_
                != com.google.cloud.storageinsights.v1.DatasetConfig.SourceProjects
                    .getDefaultInstance()) {
          sourceOptions_ =
              com.google.cloud.storageinsights.v1.DatasetConfig.SourceProjects.newBuilder(
                      (com.google.cloud.storageinsights.v1.DatasetConfig.SourceProjects)
                          sourceOptions_)
                  .mergeFrom(value)
                  .buildPartial();
        } else {
          sourceOptions_ = value;
        }
        onChanged();
      } else {
        if (sourceOptionsCase_ == 7) {
          sourceProjectsBuilder_.mergeFrom(value);
        } else {
          sourceProjectsBuilder_.setMessage(value);
        }
      }
      sourceOptionsCase_ = 7;
      return this;
    }
<pre>
Defines the options for providing source projects for the dataset.
</pre>

<code>.google.cloud.storageinsights.v1.DatasetConfig.SourceProjects source_projects = 7;
</code>
java-storageinsights/proto-google-cloud-storageinsights-v1/src/main/java/com/google/cloud/storageinsights/v1/DatasetConfig.java