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

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() {

        properties.put(
                MavenArtifactProperties.CONSTITUTES_BUILD_PATH,
                String.valueOf(this.pathTypes.contains(JavaPathType.CLASSES)));
        this.properties = Collections.unmodifiableMap(properties);
    }

    @Override
    public String id() {
        return id;
    }

    @Override
    public Language getLanguage() {
        return language;
    }

    @Override

        String value = entryFields.next();
        map.put(key, value);

        checkArgument(!entryFields.hasNext(), INVALID_ENTRY_MESSAGE, entry);
      }
      return Collections.unmodifiableMap(map);
    }
  }

  private interface Strategy {
    Iterator<String> iterator(Splitter splitter, CharSequence toSplit);
  }

        String value = entryFields.next();
        map.put(key, value);

        checkArgument(!entryFields.hasNext(), INVALID_ENTRY_MESSAGE, entry);
      }
      return Collections.unmodifiableMap(map);
    }
  }

  private interface Strategy {
    Iterator<String> iterator(Splitter splitter, CharSequence toSplit);
  }

    for (int i = 0; i < numKeys - 1; i++) {
      nodes.get(i).checkAcquiredLocks(Policies.DISABLED, nodes.subList(i + 1, numKeys));
    }
    return Collections.unmodifiableMap(map);
  }

  /**
   * For the given Enum value {@code rank}, returns the value's {@code "EnumClass.name"}, which is
   * used in exception and warning output.
   */

    }

    @Override
    public Map<K, Collection<V>> asMap() {
      Map<K, Collection<V>> result = map;
      if (result == null) {
        result =
            map =
                Collections.unmodifiableMap(
                    Maps.transformValues(delegate.asMap(), Multimaps::unmodifiableValueCollection));
      }
      return result;
    }

    @Override
    public Collection<Entry<K, V>> entries() {