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 /*
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *     http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.facebook.presto.util;
public final class ImmutableCollectors
    private ImmutableCollectors() {}
    public static <T> Collector<T, ?, ImmutableList<T>> toImmutableList()
    {
        return Collector.<T, ImmutableList.Builder<T>, ImmutableList<T>>of(
                ImmutableList.Builder::new,
                ImmutableList.Builder::add,
                (leftright) -> {
                    left.addAll(right.build());
                    return left;
                },
                ImmutableList.Builder::build);
    }
    public static <T> Collector<T, ?, ImmutableSet<T>> toImmutableSet()
    {
        return Collector.<T, ImmutableSet.Builder<T>, ImmutableSet<T>>of(
                ImmutableSet.Builder::new,
                ImmutableSet.Builder::add,
                (leftright) -> {
                    left.addAll(right.build());
                    return left;
                },
                ImmutableSet.Builder::build,
                ..);
    }
    public static <T> Collector<T, ?, ImmutableMultiset<T>> toImmutableMultiset()
    {
        return Collector.<T, ImmutableMultiset.Builder<T>, ImmutableMultiset<T>>of(
                ImmutableMultiset.Builder::new,
                ImmutableMultiset.Builder::add,
                (leftright) -> {
                    left.addAll(right.build());
                    return left;
                },
                ImmutableMultiset.Builder::build,
                ..);
    }
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