@Alpha
    public ExtensionMetadata findMetadata(Class<?> extensionType, ExtensionFactory extensionFactory) {
        return extensionMetadataCache.computeIfAbsent(extensionType, createMetadata(extensionFactory));
    }
Retrieves all extension metadata for a specific extension type.

@param extensionType    The extension type
@param extensionFactory The extension factory for this extension type
@return A {@link ExtensionMetadata} object describing the extension handlers and customizers for this extension type

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