src/main/java/com/arpnetworking/steno/Logger.java
public void warn(@Nullable final String event, @Nullable final String message, @Nullable final Throwable throwable) {
        log(LogLevel.WARN, event, message, EMPTY_STRING_ARRAY, EMPTY_OBJECT_ARRAY, throwable);
    }
public void warn(@Nullable final String event, @Nullable final String message, @Nullable final Throwable throwable) {
        log(LogLevel.WARN, event, message, EMPTY_STRING_ARRAY, EMPTY_OBJECT_ARRAY, throwable);
    }
public void warn ( @ Nullable final String event , @ Nullable final String message , @ Nullable final Throwable throwable ) { log ( LogLevel . WARN , event , message , EMPTY_STRING_ARRAY , EMPTY_OBJECT_ARRAY , throwable ) ; }
Log a message for a canonical event with a <code>Throwable</code> at the
warn level. Default values are used for all other parameters.

@since 1.3.0

@param event The canonical event that occurred.
@param message The message to be logged.
@param throwable The exception (<code>Throwable</code>) to be logged.
Log a message for a canonical event with a <code > Throwable< / code > at the warn level . Default values are used for all other parameters .