@class NSArray, NSLayoutDimension; @interface _NSCompositeLayoutDimension : NSLayoutDimension { NSLayoutDimension *_firstLayoutDimension; double _secondLayoutDimensionMultiplier; NSLayoutDimension *_secondLayoutDimension; } @property (readonly) NSArray *_childAnchors; - (void)dealloc; - (void)encodeWithCoder:(id)a0; - (id)initWithCoder:(id)a0; - (id)initWithAnchor:(id)a0; - (double)_valueInEngine:(id)a0; - (id)_expressionInContext:(struct { long long x0; id x1; id x2; })a0; - (id)equationDescription; - (id)initWithDimension:(id)a0 plusDimension:(id)a1; - (id)initWithDimension:(id)a0 plusDimension:(id)a1 times:(double)a2; @end