- (NSAttributedString*)attributedName {
    NSMutableAttributedString* name = [[NSMutableAttributedString alloc] initWithString:self.name];
    [name setAttributes:@{NSFontAttributeName : [UIFont boldSystemFontOfSize:[UIFont systemFontSize]]} range:[self.name rangeOfString:self.lastname]];
    return name;
}

UIFontDescriptor *fontDescriptor = [UIFontDescriptor preferredFontDescriptorWithTextStyle:UIFontTextStyleBody];
uint32_t existingTraitsWithNewTrait = UIFontDescriptorTraitBold;
    fontDescriptor = [fontDescriptor fontDescriptorWithSymbolicTraits:existingTraitsWithNewTrait];
UIFont *updatedFont = [UIFont fontWithDescriptor:fontDescriptor size:0.0];
NSDictionary *attribs =  @{NSFontAttributeName : updatedFont};
[mutableAttrString setAttributes:attribs range:result.range];

public extension UILabel {

    /// Makes the text bold.
    public func makeBold() {
        //get the UILabel's fontDescriptor
        let desc = self.font.fontDescriptor().fontDescriptorWithSymbolicTraits(.TraitBold)
        //Setting size to '0.0' will preserve the textSize
        self.font = UIFont(descriptor: desc, size: 0.0)
    }

}

let s = "(client.givenName) (client.surname)" as NSString

let myAttribute = [ NSFontAttributeName: UIFont.preferredFontForTextStyle(UIFontTextStyleTitle1) ]
let myString = NSMutableAttributedString(string: "(s)", attributes: myAttribute )

let myRange = s.rangeOfString(client.surname)
let desc = UIFont.preferredFontForTextStyle(UIFontTextStyleTitle1).fontDescriptor().fontDescriptorWithSymbolicTraits(.TraitBold)
let new = UIFont(descriptor: desc, size: 0.0)

myString.addAttribute(NSFontAttributeName, value: new, range: myRange)

nameLabel.attributedText = myString

[name setAttributes:@{NSStrokeWidthAttributeName : @-3.0} range:NSRangeFromString(name.string)];

name.setAttributes([.strokeWidth: NSNumber(value: -3.0)], range: NSRangeFromString(name.string))