public Builder setOperatorBytes(com.google.protobuf.ByteString value) {
      if (value == null) {
        throw new NullPointerException();
      }
      checkByteStringIsUtf8(value);
      operator_ = value;
      bitField0_ |= 0x00000001;
      onChanged();
      return this;
    }
<pre>
Required. The canonical Name of the operator. e.g. OccupancyCounting.
</pre>

<code>string operator = 1 [(.google.api.field_behavior) = REQUIRED];</code>

@param value The bytes for operator to set.
@return This builder for chaining.
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/OperatorQuery.java