+ " bytes. Use streaming APIs for large content."));
                    }
                    final char[] newBuf = new char[newBufferSize];
                    System.arraycopy(buf, 0, newBuf, 0, bufferSize);
                    buf = newBuf;
                    bufferSize = newBufferSize;
                }
            }
            return new String(buf, 0, size);