func ValidateHTTPHeaderWithAuthorityOperationName(name string) error {
	if name == "" {
		return fmt.Errorf("header name cannot be empty")
	}
	// Authority header is validated later
	if isInternalHeader(name) && !isAuthorityHeader(name) {
		return fmt.Errorf(`invalid header %q: header cannot have ":" prefix`, name)
	}
	return nil
}