public Builder setSharepointFolderIdBytes(com.google.protobuf.ByteString value) {
        if (value == null) {
          throw new NullPointerException();
        }
        checkByteStringIsUtf8(value);
        folderSourceCase_ = 6;
        folderSource_ = value;
        onChanged();
        return this;
      }
<pre>
The ID of the SharePoint folder to download from.
</pre>

<code>string sharepoint_folder_id = 6;</code>

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