import java.io.IOException;
import java.io.Reader;
import java.io.StringReader;
import java.util.ArrayList;
import java.util.List;
import java.util.Set;

/**
 * Deeply opinionated file filter that adds elements to the release notes HTML page.
 */
public class ReleaseNotesTransformer extends FilterReader {
    private File baseCss;
    private File releaseNotesCss;
    private File releaseNotesJavascript;

        Map<AccessorKey, ReplacedAccessor> oldAccessorsOfUpgradedProperties = (Map<AccessorKey, ReplacedAccessor>) context.getUserData().get(OLD_ACCESSORS_OF_UPGRADED_PROPERTIES);

        // Find accessors that were not removed but should be
        Map<AccessorKey, ReplacedAccessor> keptAccessors = new HashMap<>(oldAccessorsOfUpgradedProperties);
        keptAccessors.entrySet().removeIf(e -> {

                return false;
            }
            AccessorKey that = (AccessorKey) o;
            return Objects.equals(containingType, that.containingType)
                && Objects.equals(methodName, that.methodName)
                && Objects.equals(descriptor, that.descriptor);
        }

        @Override
        public int hashCode() {

        } catch (FileNotFoundException e) {
            throw new UncheckedIOException(e);
        }
    }

    /**
     * Automatically accept changes that are valid property upgrades of a getter or setter.
     *
     * Here we automatically accept the following cases:
     * - A setter `setX` of an upgraded property is removed