     @available(iOS 7.0, *)
     internal func greaterThanOrEqualTo(other: LayoutSupport) -> ConstraintDescriptionEditable {
         return self.constrainTo(other, relation: .GreaterThanOrEqualTo)
+    }
+    @available(iOS 9.0, *)
+    internal func greaterThanOrEqualTo(other: NSLayoutAnchor) -> ConstraintDescriptionEditable {
+        return self.constrainTo(other, relation: .LessThanOrEqualTo)
     }
     internal func greaterThanOrEqualTo(other: Float) -> ConstraintDescriptionEditable {
         return self.constrainTo(other, relation: .GreaterThanOrEqualTo)

    func equalTo(other: View) -> ConstraintDescriptionEditable
    @available(iOS 7.0, *)
    func equalTo(other: LayoutSupport) -> ConstraintDescriptionEditable
    func equalTo(other: Float) -> ConstraintDescriptionEditable
    func equalTo(other: Double) -> ConstraintDescriptionEditable
    func equalTo(other: CGFloat) -> ConstraintDescriptionEditable

    internal func lessThanOrEqualTo(other: LayoutSupport) -> ConstraintDescriptionEditable {
        return self.constrainTo(other, relation: .LessThanOrEqualTo)
    }
    @available(iOS 9.0, *)
    internal func lessThanOrEqualTo(other: NSLayoutAnchor) -> ConstraintDescriptionEditable {
        return self.constrainTo(other, relation: .LessThanOrEqualTo)
    }
    internal func lessThanOrEqualTo(other: Float) -> ConstraintDescriptionEditable {
        return self.constrainTo(other, relation: .LessThanOrEqualTo)
    }
