@Alpha
    default void buildExtensionMetadata(ExtensionMetadata.Builder builder) {}
Receives the {@link ExtensionMetadata.Builder} when the {@link ExtensionMetadata} object for this extension
is created. The factory can add additional method handlers or specific instance and method customizers as needed.
<br/>
Code here can call methods on the builder to configure the metadata object.

@param builder The builder object that is used to create the {@link ExtensionMetadata} object

@since 3.38.0
core/src/main/java/org/jdbi/v3/core/extension/ExtensionFactory.java