.swift

import Foundation
import UIKit

extension UIButton {
    
    static func buttonForAddingAnnotation() -> UIButton {
        
        let addFloodButton = UIButton(frame: CGRect.zero)
        addFloodButton.translatesAutoresizingMaskIntoConstraints = false
        addFloodButton.setImage(UIImage(named: "plus-image"), for: .normal)
        return addFloodButton
    }
    
}