import static com.google.common.cache.LocalCache.Strength.STRONG;
import static com.google.common.collect.Maps.immutableEntry;
import static com.google.common.truth.Truth.assertThat;

import com.google.common.base.Function;
import com.google.common.cache.LocalCache.Strength;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Iterables;
import java.lang.ref.WeakReference;
import junit.framework.TestCase;

      CollectorTester<T, A, R> of(
          Collector<T, A, R> collector, BiPredicate<? super R, ? super R> equivalence) {
    return new CollectorTester<>(collector, equivalence);
  }

  private final Collector<T, A, R> collector;
  private final BiPredicate<? super R, ? super R> equivalence;

  private CollectorTester(
      Collector<T, A, R> collector, BiPredicate<? super R, ? super R> equivalence) {

                .filter(p -> !request.getPluginGroups().contains(p.getGroupId()))
                .collect(Collectors.groupingBy(
                        Plugin::getGroupId,
                        LinkedHashMap::new,
                        Collectors.mapping(Plugin::getArtifactId, Collectors.toSet())));
        request.getPluginGroups().forEach(g -> candidates.put(g, null));

                    return "***MASKED***";
                }
                if ("$USERNAME".equals(s)) {
                    return username;
                }
                return s;
            }).collect(java.util.stream.Collectors.joining(" ")));
            logger.debug("Executing command for user: username={}, command={}", username, commandStr);
        }

        final String[] cmds = stream(commands).get(stream -> stream.map(s -> {

                    prefix = null;
                }
                return pagingQueryList.stream()
                        .filter(s -> prefix == null || !s.startsWith(prefix))
                        .collect(Collectors.joining("&", "&", StringUtil.EMPTY));
            }
            return null;
        }).orElse(StringUtil.EMPTY);
    }

    /**
     * Generates URL query parameters for facet filtering.
     *

    }

    protected String createMessage(final ApiFailureResource resource, final Throwable cause) {
        if (!resource.getMessageList().isEmpty()) {
            return resource.getMessageList().stream().collect(Collectors.joining(" "));
        }

        if (cause == null) {
            return "Unknown error";
        }

        final Supplier<String> stacktraceString = () -> {

 */

package com.google.common.collect;

import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.base.Preconditions.checkElementIndex;
import static com.google.common.base.Preconditions.checkNotNull;
import static com.google.common.base.Preconditions.checkPositionIndexes;
import static com.google.common.collect.CollectPreconditions.checkNonnegative;

        return null;
    }

    private ArtifactResolutionResult collect(Set<Artifact> artifacts) throws ArtifactResolutionException {
        return collect(artifacts, null);
    }

    private ArtifactResolutionResult collect(Set<Artifact> artifacts, ArtifactFilter filter)
            throws ArtifactResolutionException {
        return artifactCollector.collect(

        final List<User> list = userService.getUserList(pager);
        return asJson(
                new ApiResult.ApiConfigsResponse<EditBody>().settings(list.stream().map(this::createEditBody).collect(Collectors.toList()))
                        .total(pager.getAllRecordCount())
                        .status(ApiResult.Status.OK)
                        .result());
    }

    /**

		}
		return handler
	}

	// In each of the following cases, we check if the collect path is a
	// descendant of `path`, and if so, we add the corresponding gatherer to
	// the list of gatherers. This way, /api/a will return all metrics returned
	// by /api/a/b and /api/a/c (and any other matching descendant collector
	// paths).

	var gatherers []prometheus.Gatherer