public Builder setTargetDatetime(com.google.type.DateTime.Builder builderForValue) {
      if (targetDatetimeBuilder_ == null) {
        targetDatetime_ = builderForValue.build();
      } else {
        targetDatetimeBuilder_.setMessage(builderForValue.build());
      }
      bitField0_ |= 0x00000040;
      onChanged();
      return this;
    }
<pre>
The date for which report is generated. The time part of target_datetime
will be zero till we support multiple reports per day.
</pre>

<code>.google.type.DateTime target_datetime = 6;</code>
java-storageinsights/proto-google-cloud-storageinsights-v1/src/main/java/com/google/cloud/storageinsights/v1/ReportDetail.java