src/game/java/net/minecraft/commands/CommandSource.java

package net.minecraft.commands;

import net.minecraft.network.chat.Component;

public interface CommandSource {
    CommandSource NULL = new CommandSource() {
        @Override
        public void sendSystemMessage(Component p_230799_) {
        }

        @Override
        public boolean acceptsSuccess() {
            return false;
        }

        @Override
        public boolean acceptsFailure() {
            return false;
        }

        @Override
        public boolean shouldInformAdmins() {
            return false;
        }
    };

    void sendSystemMessage(Component p_230797_);

    boolean acceptsSuccess();

    boolean acceptsFailure();

    boolean shouldInformAdmins();

    default boolean alwaysAccepts() {
        return false;
    }
}