Struct web_sys::WebGlContextAttributes doesnt have getter of its field？How can i get the value of field in it？

[HolyZheng]

Summary

Struct web_sys::WebGlContextAttributes doesnt have getter of its field？How can i get the value of field in it？

Additional Details

In Javascript：

var canvas = document.getElementById('canvas');
var gl = canvas.getContext('webgl');
let  attr =  gl.getContextAttributes();

// I can get the field value.
attr.antialias

but in rust

 let antialias_info: WebGlContextAttributes = gl.get_context_attributes().unwrap();
// this will throw error
 let antialias = antialias_info.antialias;

attempted to take value of method `antialias` on type `web_sys::WebGlContextAttributes`
method, not a field

And this is the doc of Struct web_sys::WebGlContextAttributes

[alexcrichton]

This may be that the *.webidl files we use need to be updated, in which case a PR should suffice to update them which will generate the appropriate getters.