dubbo-serialization-extensions/dubbo-serialization-kryo/src/main/java/org/apache/dubbo/common/serialize/kryo/KryoObjectInput.java [40:135]:
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        input = new Input(inputStream);
        this.kryo = KryoUtils.get();
    }

    @Override
    public boolean readBool() throws IOException {
        try {
            return input.readBoolean();
        } catch (KryoException e) {
            throw new IOException(e);
        }
    }

    @Override
    public byte readByte() throws IOException {
        try {
            return input.readByte();
        } catch (KryoException e) {
            throw new IOException(e);
        }
    }

    @Override
    public short readShort() throws IOException {
        try {
            return input.readShort();
        } catch (KryoException e) {
            throw new IOException(e);
        }
    }

    @Override
    public int readInt() throws IOException {
        try {
            return input.readInt();
        } catch (KryoException e) {
            throw new IOException(e);
        }
    }

    @Override
    public long readLong() throws IOException {
        try {
            return input.readLong();
        } catch (KryoException e) {
            throw new IOException(e);
        }
    }

    @Override
    public float readFloat() throws IOException {
        try {
            return input.readFloat();
        } catch (KryoException e) {
            throw new IOException(e);
        }
    }

    @Override
    public double readDouble() throws IOException {
        try {
            return input.readDouble();
        } catch (KryoException e) {
            throw new IOException(e);
        }
    }

    @Override
    public byte[] readBytes() throws IOException {
        try {
            int len = input.readInt();
            if (len < 0) {
                return null;
            } else if (len == 0) {
                return new byte[]{};
            } else {
                return input.readBytes(len);
            }
        } catch (KryoException e) {
            throw new IOException(e);
        }
    }

    @Override
    public String readUTF() throws IOException {
        try {
            return input.readString();
        } catch (KryoException e) {
            throw new IOException(e);
        }
    }

    @Override
    public Object readObject() throws IOException, ClassNotFoundException {
        // TODO optimization
        try {
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dubbo-serialization-extensions/dubbo-serialization-kryo/src/main/java/org/apache/dubbo/common/serialize/kryo/optimized/KryoObjectInput2.java [42:136]:
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        input = new Input(inputStream);
        this.kryo = KryoUtils.get();
    }

    @Override
    public boolean readBool() throws IOException {
        try {
            return input.readBoolean();
        } catch (KryoException e) {
            throw new IOException(e);
        }
    }

    @Override
    public byte readByte() throws IOException {
        try {
            return input.readByte();
        } catch (KryoException e) {
            throw new IOException(e);
        }
    }

    @Override
    public short readShort() throws IOException {
        try {
            return input.readShort();
        } catch (KryoException e) {
            throw new IOException(e);
        }
    }

    @Override
    public int readInt() throws IOException {
        try {
            return input.readInt();
        } catch (KryoException e) {
            throw new IOException(e);
        }
    }

    @Override
    public long readLong() throws IOException {
        try {
            return input.readLong();
        } catch (KryoException e) {
            throw new IOException(e);
        }
    }

    @Override
    public float readFloat() throws IOException {
        try {
            return input.readFloat();
        } catch (KryoException e) {
            throw new IOException(e);
        }
    }

    @Override
    public double readDouble() throws IOException {
        try {
            return input.readDouble();
        } catch (KryoException e) {
            throw new IOException(e);
        }
    }

    @Override
    public byte[] readBytes() throws IOException {
        try {
            int len = input.readInt();
            if (len < 0) {
                return null;
            } else if (len == 0) {
                return new byte[]{};
            } else {
                return input.readBytes(len);
            }
        } catch (KryoException e) {
            throw new IOException(e);
        }
    }

    @Override
    public String readUTF() throws IOException {
        try {
            return input.readString();
        } catch (KryoException e) {
            throw new IOException(e);
        }
    }

    @Override
    public Object readObject() throws IOException, ClassNotFoundException {
        try {
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