@java.lang.Override
    public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
      if (((bitField0_ & 0x00000001) != 0)) {
        output.writeMessage(1, getHeader());
      }
      getUnknownFields().writeTo(output);
    }
<pre>
header embodying a key and a value.
</pre>

<code>.google.cloud.tasks.v2beta3.HttpTarget.Header header = 1;</code>
java-tasks/proto-google-cloud-tasks-v2beta3/src/main/java/com/google/cloud/tasks/v2beta3/HttpTarget.java