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1.20.4 Lightweight Minecraft server

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package net.minestom.server.permission;

import net.kyori.adventure.nbt.CompoundBinaryTag;
import org.jetbrains.annotations.Nullable;

/**
 * Interface used to check if the {@link CompoundBinaryTag nbt data} of a {@link Permission} is correct.
 */
@FunctionalInterface
public interface PermissionVerifier {

    /**
     * Called when using {@link PermissionHandler#hasPermission(String, PermissionVerifier)}.
     *
     * @param nbtCompound the data of the permission, can be null if not any
     * @return true if {@link PermissionHandler#hasPermission(String, PermissionVerifier)}
     * should return true, false otherwise
     */
    boolean isValid(@Nullable CompoundBinaryTag nbtCompound);
}