code: public <T extends Number> ComparatorCondition ne(Set<T> value) {
          return new ComparatorCondition("<>", this, new LiteralOperand(value));
      }
docs: Returns a <a href=
  "http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Expressions.SpecifyingConditions.html#ConditionExpressionReference.Functions"
  >comparator condition</a> (that evaluates to true if the attribute value
  referred to by this path operand is not equal to that of the specified
  path operand) for building condition expression.