CHGenerator/Sources/Generator/Extensions/Optional+Extensions.swift

import Foundation
import Metal

extension Optional {

    func unwrapped<T>(_ closure: (Wrapped) -> T?) -> T? {
        if case let .some(value) = self {
            return closure(value)
        }
        return nil
    }

    @discardableResult
    func ifNil(_ closure: () -> Void) -> Self {
        if self == nil {
            closure()
        }
        return self
    }

    @discardableResult
    func ifNotNil(_ closure: () -> Void) -> Self {
        if self != nil {
            closure()
        }
        return self
    }
}