Add withDefaults Shortcut for Custom Configurers

Issue gh-13204

Author: jzheaux

config/src/main/java/org/springframework/security/config/annotation/AbstractConfiguredSecurityBuilder.java

@@ -144,6 +144,29 @@ public <C extends SecurityConfigurer<O, B>> C apply(C configurer) throws Excepti
 		return configurer;
 	}
 
+	/**
+	 * Applies a {@link SecurityConfigurerAdapter} to this {@link SecurityBuilder} and
+	 * invokes {@link SecurityConfigurerAdapter#setBuilder(SecurityBuilder)}.
+	 *
+	 * <p>
+	 * A shortcut for applying a configurer as-is, or in other words: <code>
+	 *     .with(new MyConfigurer())
+	 * </code>
+	 *
+	 * <p>
+	 * Is identical to: <code>
+	 *     .with(new MyConfigurer(), Customizer.withDefaults())
+	 * </code>
+	 * @param configurer
+	 * @return the {@link SecurityBuilder} for further customizations
+	 * @throws Exception
+	 * @since 7.0
+	 */
+	@SuppressWarnings("unchecked")
+	public <C extends SecurityConfigurerAdapter<O, B>> B with(C configurer) throws Exception {
+		return with(configurer, Customizer.withDefaults());
+	}
+
 	/**
 	 * Applies a {@link SecurityConfigurerAdapter} to this {@link SecurityBuilder} and
 	 * invokes {@link SecurityConfigurerAdapter#setBuilder(SecurityBuilder)}.