Get rid of checks when creating constructs. Check should handle this.

inlineXHTMLContent.go

@@ -13,18 +13,9 @@ type InlineXHTMLContent struct {
 }
 
 // newInlineXHTMLContent creates a new InlineXHTMLContent. It returns a
-// *InlineXHTMLContent and an error.
-func newInlineXHTMLContent(mediaType string, content any) (*InlineXHTMLContent, error) {
-	if mediaType != "xhtml" {
-		return nil, fmt.Errorf("media type %v incompatible with inline xhtml content", mediaType)
-	}
-
-	xhtmlDiv, ok := content.(*XHTMLDiv)
-	if !ok {
-		return nil, fmt.Errorf("content type %T incompatible with inline xhtml content", content)
-	}
-
-	return &InlineXHTMLContent{Type: mediaType, XHTMLDiv: xhtmlDiv}, nil
+// *InlineXHTMLContent.
+func newInlineXHTMLContent(mediaType string, div *XHTMLDiv) *InlineXHTMLContent {
+	return &InlineXHTMLContent{Type: mediaType, XHTMLDiv: div}
 }
 
 // isContent checks whether the InlineXHTMLContent is a Content. It returns a