@java.lang.Override
      public com.google.cloud.tasks.v2beta3.HttpTarget.Header buildPartial() {
        com.google.cloud.tasks.v2beta3.HttpTarget.Header result =
            new com.google.cloud.tasks.v2beta3.HttpTarget.Header(this);
        if (bitField0_ != 0) {
          buildPartial0(result);
        }
        onBuilt();
        return result;
      }
<pre>
Defines a header message. A header can have a key and a value.
</pre>

Protobuf type {@code google.cloud.tasks.v2beta3.HttpTarget.Header}
java-tasks/proto-google-cloud-tasks-v2beta3/src/main/java/com/google/cloud/tasks/v2beta3/HttpTarget.java