function createVAOAndSetAttributes(gl, setters, attribs, indices) {
	    var vao = gl.createVertexArray();
	    gl.bindVertexArray(vao);
	    programs.setAttributes(setters, attribs);
	    if (indices) {
	      gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, indices);
	    }
	    // We unbind this because otherwise any change to ELEMENT_ARRAY_BUFFER
	    // like when creating buffers for other stuff will mess up this VAO's binding
	    gl.bindVertexArray(null);
	    return vao;
	  }
Creates a vertex array object and then sets the attributes on it

@param {WebGLRenderingContext} gl The WebGLRenderingContext to use.
@param {Object.<string, function>} setters Attribute setters as returned from createAttributeSetters
@param {Object.<string, module:twgl.AttribInfo>} attribs AttribInfos mapped by attribute name.
@param {WebGLBuffer} [indices] an optional ELEMENT_ARRAY_BUFFER of indices
@memberOf module:twgl/vertexArrays