Add two previously unimplemented methods.

git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@28252 72102866-910b-0410-8b05-ffd578937521

Headers/Foundation/NSData.h

@@ -102,12 +102,23 @@ enum {
 - (BOOL) isEqualToData: (NSData*)other;
 - (NSUInteger) length;
 
-// Storing Data
-
+/**
+ * <p>Writes a copy of the data encapsulated by the receiver to a file
+ * at path.  If the useAuxiliaryFile flag is YES, this writes to a
+ * temporary file and then renames that to the file at path, thus
+ * ensuring that path exists and does not contain partially written
+ * data at any point.
+ * </p>
+ * <p>On success returns YES, on failure returns NO.
+ * </p>
+ */
 - (BOOL) writeToFile: (NSString*)path
 	  atomically: (BOOL)useAuxiliaryFile;
 
 #if OS_API_VERSION(GS_API_MACOSX, GS_API_LATEST)
+/**
+ * Writes a copy of the contents of the receiver to the specified URL.
+ */
 - (BOOL) writeToURL: (NSURL*)anURL atomically: (BOOL)flag;
 #endif
 
@@ -131,11 +142,23 @@ enum {
 		 atIndex: (unsigned int)index;
 
 #if OS_API_VERSION(100400,GS_API_LATEST) 
-/** Not implemented */
+/**
+ * <p>Writes a copy of the data encapsulated by the receiver to a file
+ * at path.  If the NSAtomicWrite option is set, this writes to a
+ * temporary file and then renames that to the file at path, thus
+ * ensuring that path exists and does not contain partially written
+ * data at any point.
+ * </p>
+ * <p>On success returns YES, on failure returns NO.
+ * </p>
+ */
 - (BOOL) writeToFile: (NSString *)path
              options: (NSUInteger)writeOptionsMask
                error: (NSError **)errorPtr;
-/** Not implemented */
+
+/**
+ * Writes a copy of the contents of the receiver to the specified URL.
+ */
 - (BOOL) writeToURL: (NSURL *)url
             options: (NSUInteger)writeOptionsMask
               error: (NSError **)errorPtr;