@java.lang.Override
  public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(parent_)) {
      com.google.protobuf.GeneratedMessageV3.writeString(output, 1, parent_);
    }
    if (((bitField0_ & 0x00000001) != 0)) {
      output.writeMessage(2, getSearchConfig());
    }
    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(searchConfigId_)) {
      com.google.protobuf.GeneratedMessageV3.writeString(output, 3, searchConfigId_);
    }
    getUnknownFields().writeTo(output);
  }
<pre>
Required. ID to use for the new search config. Will become the final
component of the SearchConfig's resource name. This value should be up to
63 characters, and valid characters are /[a-z][0-9]-_/. The first character
must be a letter, the last could be a letter or a number.
</pre>

<code>string search_config_id = 3 [(.google.api.field_behavior) = REQUIRED];</code>

@return The bytes for searchConfigId.
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/CreateSearchConfigRequest.java