@Override
        public boolean removeAll(Collection<?> c) {
          return removeEntriesIf(Maps.<Collection<V>>valuePredicateOnEntries(in(c)));
        }

        @Override
        public boolean retainAll(Collection<?> c) {
          return removeEntriesIf(Maps.<Collection<V>>valuePredicateOnEntries(not(in(c))));
        }
      }
      return new ValuesImpl();
    }
  }

  @Override

        @Override
        public boolean removeAll(Collection<?> c) {
          return removeEntriesIf(Maps.<Collection<V>>valuePredicateOnEntries(in(c)));
        }

        @Override
        public boolean retainAll(Collection<?> c) {
          return removeEntriesIf(Maps.<Collection<V>>valuePredicateOnEntries(not(in(c))));
        }
      }
      return new ValuesImpl();
    }
  }

  @Override

        return obj != null && removeFromColumnIf(Maps.<V>valuePredicateOnEntries(equalTo(obj)));
      }

      @Override
      public boolean removeAll(Collection<?> c) {
        return removeFromColumnIf(Maps.<V>valuePredicateOnEntries(in(c)));
      }

      @Override
      public boolean retainAll(Collection<?> c) {
        return removeFromColumnIf(Maps.<V>valuePredicateOnEntries(not(in(c))));
      }
    }
  }