return Collections.unmodifiableMap(super.column(columnKey));
    }

    @Override
    public Set<C> columnKeySet() {
      return Collections.unmodifiableSet(super.columnKeySet());
    }

    @Override
    public Map<C, Map<R, V>> columnMap() {
      return unmodifiableMap(Maps.transformValues(super.columnMap(), Collections::unmodifiableMap));
    }

    @Override

      return Collections.unmodifiableMap(super.column(columnKey));
    }

    @Override
    public Set<C> columnKeySet() {
      return Collections.unmodifiableSet(super.columnKeySet());
    }

    @Override
    public Map<C, Map<R, V>> columnMap() {
      return unmodifiableMap(Maps.transformValues(super.columnMap(), Collections::unmodifiableMap));
    }

    @Override

            new TestStringMapGenerator() {
              @Override
              protected Map<String, String> create(Entry<String, String>[] entries) {
                return unmodifiableMap(toHashMap(entries));
              }
            })
        .named("unmodifiableMap/HashMap")
        .withFeatures(
            MapFeature.ALLOWS_NULL_KEYS,
            MapFeature.ALLOWS_NULL_VALUES,
            MapFeature.ALLOWS_ANY_NULL_QUERIES,

            new TestStringMapGenerator() {
              @Override
              protected Map<String, String> create(Entry<String, String>[] entries) {
                return unmodifiableMap(toHashMap(entries));
              }
            })
        .named("unmodifiableMap/HashMap")
        .withFeatures(
            MapFeature.ALLOWS_NULL_KEYS,
            MapFeature.ALLOWS_NULL_VALUES,
            MapFeature.ALLOWS_ANY_NULL_QUERIES,

 * limitations under the License.
 */

package com.google.common.collect;

import static java.util.Collections.sort;
import static java.util.Collections.unmodifiableMap;

import com.google.caliper.BeforeExperiment;
import com.google.caliper.Benchmark;
import com.google.caliper.Param;
import com.google.common.collect.CollectionBenchmarkSampleData.Element;
import java.util.ArrayList;

import static java.lang.Double.NEGATIVE_INFINITY;
import static java.lang.Double.NaN;
import static java.lang.Double.POSITIVE_INFINITY;
import static java.util.Arrays.sort;
import static java.util.Collections.unmodifiableMap;

import com.google.common.annotations.GwtIncompatible;
import com.google.common.annotations.J2ktIncompatible;
import com.google.common.primitives.Doubles;
import com.google.common.primitives.Ints;

        Map<K, V> onlyOnRight,
        Map<K, V> onBoth,
        Map<K, ValueDifference<V>> differences) {
      this.onlyOnLeft = unmodifiableMap(onlyOnLeft);
      this.onlyOnRight = unmodifiableMap(onlyOnRight);
      this.onBoth = unmodifiableMap(onBoth);
      this.differences = unmodifiableMap(differences);
    }

    @Override
    public boolean areEqual() {

        Map<K, V> onlyOnRight,
        Map<K, V> onBoth,
        Map<K, ValueDifference<V>> differences) {
      this.onlyOnLeft = unmodifiableMap(onlyOnLeft);
      this.onlyOnRight = unmodifiableMap(onlyOnRight);
      this.onBoth = unmodifiableMap(onBoth);
      this.differences = unmodifiableMap(differences);
    }

    @Override
    public boolean areEqual() {

    @Nonnull
    @Override
    public Map<String, String> getUserProperties() {
        return Collections.unmodifiableMap(new PropertiesAsMap(getMavenSession().getUserProperties()));
    }

    @Nonnull
    @Override
    public Map<String, String> getSystemProperties() {
        return Collections.unmodifiableMap(new PropertiesAsMap(getMavenSession().getSystemProperties()));
    }

    @Nonnull
    @Override

        // by getMessageByCode
        errorCodeMessagesTmp.put(0, "NT_STATUS_SUCCESS");

        errorCodeMessages = Collections.unmodifiableMap(errorCodeMessagesTmp);
        dosErrorCodeStatuses = Collections.unmodifiableMap(dosErrorCodeStatusesTmp);

        final Map<Integer, String> winErrorCodeMessagesTmp = new HashMap<>();
        for (int i = 0; i < WINERR_CODES.length; i++) {