function buildSVG(container) {
            if (!svg) {
                svg = d3Selection.select(container)
                  .append('svg')
                    .classed('britechart donut-chart', true);

                buildContainerGroups();
            }

            // Updates Container Group position
            svg
                .select('.container-group')
                .attr('transform', `translate(${width / 2}, ${height / 2})`);

            // Updates SVG size
            svg
                .attr('width', width)
                .attr('height', height);
        }
Builds the SVG element that will contain the chart

@param  {HTMLElement} container DOM element that will work as the container of the graph
@private