Use one file per class.

src/XMPPMessage.m

@@ -0,0 +1,57 @@
+#import "XMPPMessage.h"
+
+@implementation XMPPMessage
++ message
+{
+	return [[[self alloc] init] autorelease];
+}
+
++ messageWithID: (OFString*)ID_
+{
+	return [[[self alloc] initWithID: ID_] autorelease];
+}
+
++ messageWithType: (OFString*)type_
+{
+	return [[[self alloc] initWithType: type_] autorelease];
+}
+
++ messageWithType: (OFString*)type_
+	       ID: (OFString*)ID_
+{
+	return [[[self alloc] initWithType: type_
+					ID: ID_] autorelease];
+}
+
+- init
+{
+	return [self initWithType: nil
+			       ID: nil];
+}
+
+- initWithID: (OFString*)ID_
+{
+	return [self initWithType: nil
+			       ID: ID_];
+}
+
+- initWithType: (OFString*)type_
+{
+	return [self initWithType: type_
+			       ID: nil];
+}
+
+- initWithType: (OFString*)type_
+	    ID: (OFString*)ID_
+{
+	return [super initWithName: @"message"
+			      type: type_
+				ID: ID_];
+}
+
+- (void)addBody: (OFString*)body
+{
+	[self addChild: [OFXMLElement elementWithName: @"body"
+					  stringValue: body]];
+}
+@end