private void writeMethods() throws IOException {
   for (MethodInfo method : methods) {
     os.writeShort(method.getAccessFlags());
     os.writeShort(method.getNameIndex());
     os.writeShort(method.getDescriptorIndex());
     os.writeShort(method.getAttributes().length);
     attributeFacility.writeAttributes(method.getAttributes());
   }
 }
  private MethodInfo readMethod() throws IOException {
    MethodInfo methodInfo = new MethodInfo();

    methodInfo.setAccessFlags(is.readUnsignedShort());
    methodInfo.setNameIndex(is.readUnsignedShort());
    methodInfo.setDescriptorIndex(is.readUnsignedShort());
    int attributesCount = is.readUnsignedShort();

    methodInfo.setAttributes(new AbstractAttribute[attributesCount]);

    for (int i = 0; i < attributesCount; i++) {
      AbstractAttribute attribute = attributeFacility.readAttribute();
      if (isInterceptorAnnotation(attribute)) {
        methodInfo.setInterceptorClass(
            ((RuntimeInvisibleAnnotations) attribute).getInterceptorClass());
      }
      methodInfo.getAttributes()[i] = attribute;
      if (attribute.getClass() == Code.class) {
        methodInfo.setCode((Code) attribute);
      }
    }

    methodInfo.setSignature(getMethodSignature(methodInfo));
    methodInfo.setMethodName(constantPool.getUtf8(methodInfo.getNameIndex()).getString());

    return methodInfo;
  }