contains All
Returns true if this filter might contain all of the elements of the specified collection (optional operation). More formally, returns true if contains== true for all of the elements of the specified collection.
Return
true if this filter might contain all elements of the specified collection
Parameters
c
collection containing elements to be checked for containment in this filter
See also
Throws
if the specified collection contains one or more null elements, or if the specified collection is null
Not supported.