1 files changed, 10 insertions, 1 deletions
diff --git a/src/core/lombok/extern/log4j/Log4j2.java b/src/core/lombok/extern/log4j/Log4j2.java
index 2a0f09e1..dc8b17c4 100644
--- a/src/core/lombok/extern/log4j/Log4j2.java
+++ b/src/core/lombok/extern/log4j/Log4j2.java
@@ -26,6 +26,9 @@ import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.lang.annotation.Target;
 
+import lombok.core.FlagUsageType;
+import lombok.core.configuration.ConfigurationKey;
+
 /**
  * Causes lombok to generate a logger field.
  * <p>
@@ -59,4 +62,10 @@ import java.lang.annotation.Target;
 @Retention(RetentionPolicy.SOURCE)
 @Target(ElementType.TYPE)
 public @interface Log4j2 {
-}
-\ No newline at end of file
+	/**
+	 * lombok configuration: {@code lombok.log.log4j2.flagUsage} = {@code WARNING} | {@code ERROR}.
+	 * 
+	 * If set, <em>any</em> usage of {@code @Log4j2} results in a warning / error.
+	 */
+	ConfigurationKey<FlagUsageType> FLAG_USAGE = new ConfigurationKey<FlagUsageType>("lombok.log.log4j2.flagUsage") {};
+}