public Builder setRagCorpusBytes(com.google.protobuf.ByteString value) {
        if (value == null) {
          throw new NullPointerException();
        }
        checkByteStringIsUtf8(value);
        ragCorpus_ = value;
        bitField0_ |= 0x00000001;
        onChanged();
        return this;
      }
<pre>
Optional. RagCorpora resource name.
Format:
`projects/{project}/locations/{location}/ragCorpora/{rag_corpus}`
</pre>

<code>
string rag_corpus = 1 [(.google.api.field_behavior) = OPTIONAL, (.google.api.resource_reference) = { ... }
</code>

@param value The bytes for ragCorpus to set.
@return This builder for chaining.
java-vertexai/proto-google-cloud-vertexai-v1/src/main/java/com/google/cloud/vertexai/api/VertexRagStore.java