/usr/share/GNUstep/Documentation/Developer/BaseAdditions/ is in gnustep-base-doc 1.24.7-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/GNUstep/Documentation/Developer/BaseAdditions/Reference/
/usr/share/GNUstep/Documentation/Developer/BaseAdditions/Reference/BaseAdditions.html
/usr/share/GNUstep/Documentation/Developer/BaseAdditions/Reference/ClassesTOC.html
/usr/share/GNUstep/Documentation/Developer/BaseAdditions/Reference/ConstantsTOC.html
/usr/share/GNUstep/Documentation/Developer/BaseAdditions/Reference/Functions.html
/usr/share/GNUstep/Documentation/Developer/BaseAdditions/Reference/FunctionsTOC.html
/usr/share/GNUstep/Documentation/Developer/BaseAdditions/Reference/GCObject.html
/usr/share/GNUstep/Documentation/Developer/BaseAdditions/Reference/GSLock.html
/usr/share/GNUstep/Documentation/Developer/BaseAdditions/Reference/GSMime.html
/usr/share/GNUstep/Documentation/Developer/BaseAdditions/Reference/GSXML.html
/usr/share/GNUstep/Documentation/Developer/BaseAdditions/Reference/MacrosTOC.html
/usr/share/GNUstep/Documentation/Developer/BaseAdditions/Reference/MainIndex.html
/usr/share/GNUstep/Documentation/Developer/BaseAdditions/Reference/NSArray+GNUstepBase.html
/usr/share/GNUstep/Documentation/Developer/BaseAdditions/Reference/NSAttributedString+GNUstepBase.html
/usr/share/GNUstep/Documentation/Developer/BaseAdditions/Reference/NSBundle+GNUstepBase.html
/usr/share/GNUstep/Documentation/Developer/BaseAdditions/Reference/NSCalendarDate+GNUstepBase.html
/usr/share/GNUstep/Documentation/Developer/BaseAdditions/Reference/NSData+GNUstepBase.html
/usr/share/GNUstep/Documentation/Developer/BaseAdditions/Reference/NSFileHandle+GNUstepBase.html
/usr/share/GNUstep/Documentation/Developer/BaseAdditions/Reference/NSLock+GNUstepBase.html
/usr/share/GNUstep/Documentation/Developer/BaseAdditions/Reference/NSMutableString+GNUstepBase.html
/usr/share/GNUstep/Documentation/Developer/BaseAdditions/Reference/NSNumber+GNUstepBase.html
/usr/share/GNUstep/Documentation/Developer/BaseAdditions/Reference/NSObject+GNUstepBase.html
/usr/share/GNUstep/Documentation/Developer/BaseAdditions/Reference/NSProcessInfo+GNUstepBase.html
/usr/share/GNUstep/Documentation/Developer/BaseAdditions/Reference/NSString+GNUstepBase.html
/usr/share/GNUstep/Documentation/Developer/BaseAdditions/Reference/NSTask+GNUstepBase.html
/usr/share/GNUstep/Documentation/Developer/BaseAdditions/Reference/NSThread+GNUstepBase.html
/usr/share/GNUstep/Documentation/Developer/BaseAdditions/Reference/NSURL+GNUstepBase.html
/usr/share/GNUstep/Documentation/Developer/BaseAdditions/Reference/OrderedSymbolDeclarations.plist
/usr/share/GNUstep/Documentation/Developer/BaseAdditions/Reference/TypesAndConstants.html
/usr/share/GNUstep/Documentation/Developer/BaseAdditions/Reference/TypesTOC.html
/usr/share/GNUstep/Documentation/Developer/BaseAdditions/Reference/VariablesTOC.html
/usr/share/GNUstep/Documentation/Developer/BaseAdditions/Reference/index.html