Checkstyle: Javadoc.
diff --git a/src/main/java/org/apache/commons/text/TextStringBuilder.java b/src/main/java/org/apache/commons/text/TextStringBuilder.java
index 1ae9ebe..a1b7bdf 100644
--- a/src/main/java/org/apache/commons/text/TextStringBuilder.java
+++ b/src/main/java/org/apache/commons/text/TextStringBuilder.java
@@ -75,6 +75,7 @@
  */
 public class TextStringBuilder implements CharSequence, Appendable, Serializable, Builder<String> {
 
+    /** The space character. */
     private static final char SPACE = ' ';
 
     /**