[(new Gson().toJson(change.key)): change.value]
        }
    }

    static Map<ApiChange, String> fromAcceptedChangesMap(Map<String, String> acceptedChanges) {
        acceptedChanges.collectEntries { key, value ->
            [(new Gson().fromJson(key, ApiChange)): value]
        }
    }

import gradlebuild.binarycompatibility.ApiChange;
import me.champeau.gradle.japicmp.report.SetupRule;
import me.champeau.gradle.japicmp.report.ViolationCheckContext;

import java.util.Collections;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;

public class AcceptedRegressionsRuleSetup implements SetupRule {

    private final Set<ApiChange> acceptedApiChanges;

        return acceptOrReject(member, changes, rejection)
    }

    Violation acceptOrReject(JApiCompatibility member, List<String> changes, Violation rejection) {
        Set<ApiChange> seenApiChanges = (Set<ApiChange>) context.userData["seenApiChanges"]
        Set<AccessorKey> seenOldAccessorsOfUpgradedProperties = (Set<AccessorKey>) context.userData[SEEN_OLD_REMOVED_ACCESSORS_OF_UPGRADED_PROPERTIES]