@available(iOS 9.0, *) public class Button: UIButton
UIButton
public init(title: String, titleColor: UIColor? = nil, backgroundColor: UIColor? = nil, forEvent event: UIControl.Event = .touchUpInside, action: (() -> Void)? = nil)
public init(forEvent event: UIControl.Event = .touchUpInside, action: (() -> Void)? = nil, labelView: () -> UIView)
@discardableResult public func setAction(_ action: (() -> Void)?) -> Self