Removes a single instance of the specified element from this collection,
if it is present (optional operation).
Removes a single instance of the specified element from this collection,
if it is present (optional operation).
Removes a single instance of the specified element from this collection,
if it is present (optional operation).
Removes all this collection's elements that are also contained in the
specified collection (optional operation).
Removes all this collection's elements that are also contained in the
specified collection (optional operation).
Removes all this collection's elements that are also contained in the
specified collection (optional operation).
Retains only the elements in this collection that are contained in the
specified collection (optional operation).
Retains only the elements in this collection that are contained in the
specified collection (optional operation).
Retains only the elements in this collection that are contained in the
specified collection (optional operation).