View protocol in SwiftUI

Question

I am new to SwiftUI.... View is a protocol which only contains required stored property called "body". My question is , where modifier methods come from. 'cause "Protocol methods must not have bodies".?

Answer 1

My question is , where modifier methods come from. 'cause "Protocol methods must not have bodies".?

From extension like in below example:

extension View {
    @ViewBuilder
    public func isHidden(_ hidden: Bool) -> some View {
        if hidden {
            self.hidden()
        }
        else {
            self
        }
    }
}