merrors

type Error interface {
	error

	// Errors returns underlying errors.
	Errors() []error

	// As finds the first error in multiError slice of error chains that matches target, and if so, sets
	// target to that error value and returns true. Otherwise, it returns false.
	//
	// An error matches target if the error's concrete value is assignable to the value
	// pointed to by target, or if the error has a method As(interface{}) bool such that
	// As(target) returns true. In the latter case, the As method is responsible for
	// setting target.
	As(target interface{}) bool
	// Is returns true if any error in multiError's slice of error chains matches the given target or
	// if the target is of multiError type.
	//
	// An error is considered to match a target if it is equal to that target or if
	// it implements a method Is(error) bool such that Is(target) returns true.
	Is(target error) bool
	// Count returns the number of multi error' errors that match the given target.
	// Matching is defined as in Is method.
	Count(target error) int
}

type NilOrMultiError struct {
	// contains filtered or unexported fields
}