Internal Javadoc fix.
MODIFY
src/main/java/org/apache/commons/io/FileUtils.java
src/main/java/org/apache/commons/io/FileUtils.java
@@ -2856,7 +2856,7 @@ private static File requireExistsChecked(final File file, final String fileParam
* @param name The parameter name to use in the exception message.
* @return the given file.
* @throws NullPointerException if the given {@code File} is {@code null}.
- * @throws IllegalArgumentException if the given {@code File} does not exist or is not a directory.
+ * @throws IllegalArgumentException if the given {@code File} does not exist or is not a file.
*/
private static File requireFile(final File file, final String name) {
Objects.requireNonNull(file, name);

Internal Javadoc fix.