Some godoc adjustments and image struct renames

langs/language.go

@@ -55,21 +55,26 @@ type Language struct {
 	Title             string
 	Weight            int
 
+	// For internal use.
 	Disabled bool
 
 	// If set per language, this tells Hugo that all content files without any
 	// language indicator (e.g. my-page.en.md) is in this language.
 	// This is usually a path relative to the working dir, but it can be an
 	// absolute directory reference. It is what we get.
+	// For internal use.
 	ContentDir string
 
 	// Global config.
+	// For internal use.
 	Cfg config.Provider
 
 	// Language specific config.
+	// For internal use.
 	LocalCfg config.Provider
 
 	// Composite config.
+	// For internal use.
 	config.Provider
 
 	// These are params declared in the [params] section of the language merged with the
@@ -91,6 +96,7 @@ type Language struct {
 	initErr error
 }
 
+// For internal use.
 func (l *Language) String() string {
 	return l.Lang
 }
@@ -233,6 +239,7 @@ func (l Languages) IsMultihost() bool {
 
 // SetParam sets a param with the given key and value.
 // SetParam is case-insensitive.
+// For internal use.
 func (l *Language) SetParam(k string, v any) {
 	l.paramsMu.Lock()
 	defer l.paramsMu.Unlock()
@@ -245,6 +252,7 @@ func (l *Language) SetParam(k string, v any) {
 // GetLocal gets a configuration value set on language level. It will
 // not fall back to any global value.
 // It will return nil if a value with the given key cannot be found.
+// For internal use.
 func (l *Language) GetLocal(key string) any {
 	if l == nil {
 		panic("language not set")
@@ -256,6 +264,7 @@ func (l *Language) GetLocal(key string) any {
 	return nil
 }
 
+// For internal use.
 func (l *Language) Set(k string, v any) {
 	k = strings.ToLower(k)
 	if globalOnlySettings[k] {
@@ -265,11 +274,13 @@ func (l *Language) Set(k string, v any) {
 }
 
 // Merge is currently not supported for Language.
+// For internal use.
 func (l *Language) Merge(key string, value any) {
 	panic("Not supported")
 }
 
 // IsSet checks whether the key is set in the language or the related config store.
+// For internal use.
 func (l *Language) IsSet(key string) bool {
 	key = strings.ToLower(key)
 	if !globalOnlySettings[key] {