fix(java): apply sourcery suggestions (#361)

Author: cesarcoatl

ignition-api/src/java/nio/file/__init__.py

@@ -11,6 +11,7 @@
     "FileStore",
     "FileSystemAlreadyExistsException",
     "FileSystemException",
+    "FileSystemLoopException",
     "FileSystemNotFoundException",
     "FileVisitOption",
     "Files",

ignition-api/src/java/util/__init__.py

@@ -1027,7 +1027,7 @@ def toInstant(self):
 class ConcurrentModificationException(RuntimeException):
     def __init__(self, message=None, cause=None):
         # type: (Optional[str], Optional[Throwable]) -> None
-        super(ConcurrentModificationException, self).__init__(message)
+        super(ConcurrentModificationException, self).__init__(message, cause)
 
 
 class Currency(Object):