@objc public class func lonelyReturnInOneLine(_ formatter: Formatter) {
        formatter.forEach(.keyword) { i, token in
            guard ["return"].contains(token.string),
                let startOfScope = formatter.index(of: .startOfScope, before: i) else {
                    return
            }

            var hasOnlySpacesBetweenStartOfScopeAndReturn = true
            for index in startOfScope + 1 ..< i {
                if !formatter.tokens[index].isSpaceOrLinebreak {
                    hasOnlySpacesBetweenStartOfScopeAndReturn = false
                    break
                }
            }
            if hasOnlySpacesBetweenStartOfScopeAndReturn {
                // This is for {return}
                formatter.removeTokens(inRange: startOfScope + 1 ..< i)

                // This is for {\nreturn\n}
                formatter.insertToken(.linebreak(formatter.options.linebreak), at: startOfScope + 1)
            }
        }
        formatter.forEach(.keyword) { i, token in
            guard ["return"].contains(token.string),
                let endOfScope = formatter.index(of: .endOfScope, after: i) else {
                return
            }

            var hasOnlySpacesBetweenReturnAndEndOfScope = true
            for indexEnd in i + 1 ..< endOfScope {
                if !formatter.tokens[indexEnd].isSpaceOrLinebreak {
                    hasOnlySpacesBetweenReturnAndEndOfScope = false
                    break
                }
            }

            if hasOnlySpacesBetweenReturnAndEndOfScope {
                // This is for {return}
                formatter.removeTokens(inRange: i + 1 ..< endOfScope)

                // This is for {\nreturn\n}
                guard let newEndOfScope = formatter.index(of: .endOfScope, after: i) else {
                    return
                }
                formatter.insertToken(.linebreak(formatter.options.linebreak), at: newEndOfScope)
            }
        }
    }