Update provenance as comment.
diff --git a/src/main/java/org/apache/commons/mail/EmailUtils.java b/src/main/java/org/apache/commons/mail/EmailUtils.java
index d97435a..a9fb1fe 100644
--- a/src/main/java/org/apache/commons/mail/EmailUtils.java
+++ b/src/main/java/org/apache/commons/mail/EmailUtils.java
@@ -111,12 +111,12 @@
/**
* Checks if a String is empty ("") or null.
+ * <p>
+ * Copied from Commons Lang v2.1, svn 240418
+ * <p>
*
* @param str the String to check, may be null
- *
* @return {@code true} if the String is empty or null
- *
- * @since Commons Lang v2.1, svn 240418
*/
static boolean isEmpty(final String str)
{
@@ -125,12 +125,12 @@
/**
* Checks if a String is not empty ("") and not null.
+ * <p>
+ * Copied from Commons Lang v2.1, svn 240418
+ * <p>
*
* @param str the String to check, may be null
- *
* @return {@code true} if the String is not empty and not null
- *
- * @since Commons Lang v2.1, svn 240418
*/
static boolean isNotEmpty(final String str)
{
@@ -140,13 +140,13 @@
/**
* Validate an argument, throwing {@code IllegalArgumentException}
* if the argument is {@code null}.
+ * <p>
+ * Copied from Commons Lang v2.1, svn 201930
+ * <p>
*
* @param object the object to check is not {@code null}
* @param message the exception message you would like to see if the object is {@code null}
- *
* @throws IllegalArgumentException if the object is {@code null}
- *
- * @since Commons Lang v2.1, svn 201930
*/
static void notNull(final Object object, final String message)
{
@@ -158,16 +158,14 @@
/**
* Creates a random string whose length is the number of characters specified.
- *
* <p>
* Characters will be chosen from the set of alphabetic characters.
* </p>
- *
+ * <p>
+ * Copied from Commons Lang v2.1, svn 201930
+ * </p>
* @param count the length of random string to create
- *
* @return the random string
- *
- * @since Commons Lang v2.1, svn 201930
*/
static String randomAlphabetic(final int count)
{
@@ -192,6 +190,9 @@
* single {@link Random} instance with a fixed seed and using it for each call, the same random sequence of strings
* can be generated repeatedly and predictably.
* </p>
+ * <p>
+ * Copied from Commons Lang v2.1, svn 201930
+ * </p>
*
* @param count the length of random string to create
* @param start the position in set of chars to start at
@@ -201,12 +202,8 @@
* @param chars the set of chars to choose randoms from. If {@code null},
* then it will use the set of all chars.
* @param random a source of randomness.
- *
* @return the random string
- *
* @throws IllegalArgumentException if {@code count} < 0.
- *
- * @since Commons Lang v2.1, svn 201930
*/
private static String random(
int count,
