method is a printf wrapper, this
// establishes that Logger.Logf is a printf wrapper too, causing
// dynamic calls through the interface to be checked:
//
//	func f(log Logger) {
//		log.Logf("%s", 123) // Logger.Logf format %s has arg 123 of wrong type int
//	}
//
// This feature applies only to interface methods declared in files
// using at least Go 1.26.
//
// # Specifying printf wrappers by flag
//
// The -funcs flag specifies a comma-separated list of names of
// additional known formatting functions or methods. (This legacy flag
// is rarely used due to the automatic inference described above.)
//
// If the name contains a period, it must denote a specific function
// using one of the following forms:
//
//	dir/pkg.Function
//	dir/pkg.Type.Method
//	(*dir/pkg.Type).Method
//
// Otherwise the name is interpreted as a case-insensitive unqualified
// identifier such as "errorf". Either way, if a listed name ends in f, the
// function is assumed to be Printf-like, taking a format string before the
// argument list. Otherwise it is assumed to be Print-like, taking a list
// of arguments with no format string.
package printf