#import @interface NSLayoutConstraint (PKDownloadButton) + (NSArray *)constraintsForWrappedSubview:(UIView *)view withInsets:(UIEdgeInsets)insets; + (NSArray *)horizontalConstraintsForWrappedSubview:(UIView *)view withInsets:(UIEdgeInsets)insets; + (NSArray *)verticalConstraintsForWrappedSubview:(UIView *)view withInsets:(UIEdgeInsets)insets; + (NSLayoutConstraint *)constraintForView:(UIView *)view withWidth:(CGFloat)width; + (NSLayoutConstraint *)constraintForView:(UIView *)view withHeight:(CGFloat)height; + (NSArray *)constraintsForView:(UIView *)view withSize:(CGSize)size; + (NSArray *)constraintsWithVisualFormat:(NSString *)format views:(NSDictionary *)views; + (NSLayoutConstraint *)constraintForCenterByYView:(UIView *)overlay withView:(UIView *)view; + (NSLayoutConstraint *)constraintForCenterByXView:(UIView *)overlay withView:(UIView *)view; // Constraints for center view above it's superview + (NSArray *)constraintsForCenterView:(UIView *)overlay; + (NSArray *)constraintsForCenterView:(UIView *)overlay withView:(UIView *)view; @end