public Builder addMethodConfigCustomizer(Method method, ConfigCustomizer configCustomizer) {
            ConfigCustomizerChain methodConfigCustomizer = methodConfigCustomizers.computeIfAbsent(method, m -> new ConfigCustomizerChain());
            methodConfigCustomizer.addCustomizer(configCustomizer);
            return this;
        }
Add a method specific configuration customizer. This customizer will be applied only to the method given here.
@param method A method object
@param configCustomizer A {@link ConfigCustomizer}
@return The builder instance
core/src/main/java/org/jdbi/v3/core/extension/ExtensionMetadata.java