private com.google.protobuf.SingleFieldBuilderV3<
            com.google.cloud.telcoautomation.v1.Blueprint,
            com.google.cloud.telcoautomation.v1.Blueprint.Builder,
            com.google.cloud.telcoautomation.v1.BlueprintOrBuilder>
        getBlueprintFieldBuilder() {
      if (blueprintBuilder_ == null) {
        blueprintBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.cloud.telcoautomation.v1.Blueprint,
                com.google.cloud.telcoautomation.v1.Blueprint.Builder,
                com.google.cloud.telcoautomation.v1.BlueprintOrBuilder>(
                getBlueprint(), getParentForChildren(), isClean());
        blueprint_ = null;
      }
      return blueprintBuilder_;
    }
<pre>
Required. The `blueprint` to update.
</pre>

<code>
.google.cloud.telcoautomation.v1.Blueprint blueprint = 1 [(.google.api.field_behavior) = REQUIRED];
</code>
java-telcoautomation/proto-google-cloud-telcoautomation-v1/src/main/java/com/google/cloud/telcoautomation/v1/UpdateBlueprintRequest.java