@java.lang.Override
      public Builder mergeFrom(com.google.protobuf.Message other) {
        if (other instanceof com.google.cloud.tasks.v2beta3.HttpTarget.Header) {
          return mergeFrom((com.google.cloud.tasks.v2beta3.HttpTarget.Header) other);
        } else {
          super.mergeFrom(other);
          return this;
        }
      }
<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