No need to check if the directory already exists.

Files.createDirectories() Javadoc states that an exception is not thrown
if the directory could not be created because it already exists.

Author: Gary Gregory

src/main/java/org/apache/commons/io/file/PathUtils.java

@@ -308,9 +308,6 @@ public static Path createParentDirectories(final Path path, final FileAttribute<
         if (parent == null) {
             return null;
         }
-        if (Files.isDirectory(parent)) {
-            return parent;
-        }
         return Files.createDirectories(parent, attrs);
     }