@@ -17,10 +17,12 @@
 #import "OFObject.h"
 #import "OFList.h"
 
 #import "threading.h"
 
+@class OFDate;
+
 /**
  * \brief A class for Thread Local Storage keys.
  */
 @interface OFTLSKey: OFObject
 {
@@ -114,10 +116,15 @@
 /**
  * Suspends execution of the current thread for N milliseconds.
  */
 + (void)sleepForNMilliseconds: (unsigned int)msecs;
 
+/**
+ * Suspends execution of the current thread until the specified date.
+ */
++ (void)sleepUntilDate: (OFDate*)date;
+
 /**
  * Yields a processor voluntarily and moves the thread at the end of the queue
  * for its priority.
  */
 + (void)yield;