Class AreaChartBuilder

// Creates a pie chart builder and sets drawing of the slices in a
// counter-clockwise manner.
const builder = Charts.newPieChart();
builder.reverseCategories();

// Creates a line chart builder and sets the background color to gray
const builder = Charts.newLineChart();
builder.setBackgroundColor('gray');

// Creates a line chart builder and sets the first two lines to be drawn in
// green and red, respectively.
const builder = Charts.newLineChart();
builder.setColors(['green', 'red']);

// Creates a line chart builder and sets the legend position to right.
const builder = Charts.newLineChart();
builder.setLegendPosition(Charts.Position.RIGHT);

// Creates a line chart builder and sets it up for a  blue, 26-point legend.
const textStyleBuilder =
    Charts.newTextStyle().setColor('#0000FF').setFontSize(26);
const style = textStyleBuilder.build();
const builder = Charts.newLineChart();
builder.setLegendTextStyle(style);

// Build an area chart with a 1-second animation duration.
const builder = Charts.newAreaChart();
builder.setOption('animation.duration', 1000);
const chart = builder.build();

// Creates a line chart builder and sets large point style.
const builder = Charts.newLineChart();
builder.setPointStyle(Charts.PointStyle.LARGE);

// Creates a line chart builder and title to 'My Line Chart'.
const builder = Charts.newLineChart();
builder.setTitle('My Line Chart');

// Creates a line chart builder and sets it up for a  blue, 26-point title.
const textStyleBuilder =
    Charts.newTextStyle().setColor('#0000FF').setFontSize(26);
const style = textStyleBuilder.build();
const builder = Charts.newLineChart();
builder.setTitleTextStyle(style);

// Creates a line chart builder and sets the X-axis text style to blue, 18-point
// font.
const textStyle =
    Charts.newTextStyle().setColor('blue').setFontSize(18).build();
const builder = Charts.newLineChart();
builder.setXAxisTextStyle(textStyle);

// Creates a line chart builder and sets the X-axis title.
const builder = Charts.newLineChart();
builder.setTitle('X-axis Title');

// Creates a line chart builder and sets the X-axis title text style to blue,
// 18-point font.
const textStyle =
    Charts.newTextStyle().setColor('blue').setFontSize(18).build();
const builder = Charts.newLineChart();
builder.setXAxisTitleTextStyle(textStyle);

// Creates a line chart builder and sets the Y-axis text style to blue, 18-point
// font.
const textStyle =
    Charts.newTextStyle().setColor('blue').setFontSize(18).build();
const builder = Charts.newLineChart();
builder.setYAxisTextStyle(textStyle);

// Creates a line chart builder and sets the Y-axis title.
const builder = Charts.newLineChart();
builder.setYAxisTitle('Y-axis Title');

// Creates a line chart builder and sets the Y-axis title text style to blue,
// 18-point font.
const textStyle =
    Charts.newTextStyle().setColor('blue').setFontSize(18).build();
const builder = Charts.newLineChart();
builder.setYAxisTitleTextStyle(textStyle);