private com.google.protobuf.SingleFieldBuilderV3<
            com.google.cloud.storageinsights.v1.DatasetConfig.SourceProjects,
            com.google.cloud.storageinsights.v1.DatasetConfig.SourceProjects.Builder,
            com.google.cloud.storageinsights.v1.DatasetConfig.SourceProjectsOrBuilder>
        getSourceProjectsFieldBuilder() {
      if (sourceProjectsBuilder_ == null) {
        if (!(sourceOptionsCase_ == 7)) {
          sourceOptions_ =
              com.google.cloud.storageinsights.v1.DatasetConfig.SourceProjects.getDefaultInstance();
        }
        sourceProjectsBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.cloud.storageinsights.v1.DatasetConfig.SourceProjects,
                com.google.cloud.storageinsights.v1.DatasetConfig.SourceProjects.Builder,
                com.google.cloud.storageinsights.v1.DatasetConfig.SourceProjectsOrBuilder>(
                (com.google.cloud.storageinsights.v1.DatasetConfig.SourceProjects) sourceOptions_,
                getParentForChildren(),
                isClean());
        sourceOptions_ = null;
      }
      sourceOptionsCase_ = 7;
      onChanged();
      return sourceProjectsBuilder_;
    }
<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