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prevent closing more than once
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1fa14a99e9
commit
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@ -60,6 +60,9 @@ export class Timeline {
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/** @public */
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/** @public */
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close() {
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close() {
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this._closeCallback();
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if (this._closeCallback) {
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this._closeCallback();
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this._closeCallback = null;
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}
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}
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}
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}
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}
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