Checkpoint

Examples/Common/Extensions/StringBuilderExtensions.cs

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+using System.Text;
+
+namespace Common.Extensions;
+
+public static class StringBuilderExtensions
+{
+  public static StringBuilder AppendHeading(this StringBuilder sb, int level, string text) => sb
+    .Append(new string('#', level))
+    .Append(' ')
+    .AppendParagraph(text);
+
+  public static StringBuilder AppendParagraph(this StringBuilder sb, string text) => sb
+    .AppendLine(text)
+    .AppendLine();
+}