| Index: lib/google_chart.dart
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| diff --git a/lib/google_chart.dart b/lib/google_chart.dart
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| index 483db9ed7dfb928b3055642d889a5f289e868704..ec3f188bff45aab53fd8e2f6a0e3b236a6e665e4 100644
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| --- a/lib/google_chart.dart
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| +++ b/lib/google_chart.dart
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| @@ -127,7 +127,7 @@ class GoogleChart extends HtmlElement with CustomElementProxyMixin, PolymerBase
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|    ///
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|    /// Should be one of:
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|    /// - `area`, `bar`, `bubble`, `candlestick`, `column`, `combo`, `geo`,
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| -  ///   `histogram`, `line`, `pie`, `scatter`, `stepped-area`
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| +  ///   `histogram`, `line`, `pie`, `scatter`, `stepped-area`, `treemap`
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|    ///
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|    /// See <a href="https://google-developers.appspot.com/chart/interactive/docs/gallery">Google Visualization API reference (Chart Gallery)</a> for details.
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|    String get type => jsElement[r'type'];
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| 
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