tdlib-serializer/headers.txt

import java.io.ByteArrayOutputStream;
import java.io.DataOutput;
import java.io.DataOutputStream;
import java.io.InputStream;
import java.nio.charset.StandardCharsets;
import java.lang.IllegalStateException;
import java.io.IOException;
import java.io.DataInput;
import java.util.Arrays;
import java.util.Objects;

public final class TdApi {
	public abstract static class Object {
		public native String toString();

		public abstract int getConstructor();

		private Object() {}

		public byte[] serialize() throws IOException {
			try (ByteArrayOutputStream baos = new ByteArrayOutputStream()) {
				try (DataOutputStream out = new DataOutputStream(baos)) {
					serialize(out);
					return baos.toByteArray();
				}
			}
		}

		public abstract void serialize(DataOutput out) throws IOException;
	}

	public abstract static class Function<R extends TdApi.Object> extends TdApi.Object {
		private Function() {}
		
		public native String toString();
    }