Added and corrected comments

inlineOtherContent.go

@@ -12,6 +12,8 @@ type InlineOtherContent struct {
 	Type       MediaType `xml:"type,attr,omitempty"`
 }
 
+// newInlineOtherContent creates a new InlineOtherContent. It returns a
+// *InlineOtherContent and an error.
 func newInlineOtherContent(mediaType string, content any) (*InlineOtherContent, error) {
 	if mediaType, _, err := mime.ParseMediaType(mediaType); err != nil {
 		return nil, fmt.Errorf("media type %v incompatible with inline other content", mediaType)
@@ -20,12 +22,19 @@ func newInlineOtherContent(mediaType string, content any) (*InlineOtherContent,
 	return &InlineOtherContent{Type: MediaType(mediaType), AnyElement: content}, nil
 }
 
+// isContent checks whether the InlineOtherContent is a Content. It returns a
+// bool.
 func (i *InlineOtherContent) isContent() bool { return true }
 
+// hasSRC checks whether the InlineOtherContent has a SRC attribute. It returns
+// a bool.
 func (i *InlineOtherContent) hasSRC() bool { return false }
 
+// getType returns the Type of the InlineOtherContent as a string.
 func (i *InlineOtherContent) getType() string { return string(i.Type) }
 
+// Check checks the InlineOtherContent for incompatibilities with RFC4287. It
+// returns an error.
 func (i *InlineOtherContent) Check() error {
 	mediaType := i.getType()