src/vs/workbench/contrib/terminal/browser/terminalGroup.ts/TerminalGroup/resizePanes
class TerminalGroup:	resizePanes(relativeSizes: number[]): void {
		if (!this._splitPaneContainer) {
			this._initialRelativeSizes = relativeSizes;
			return;
		}

		this._splitPaneContainer.resizePanes(relativeSizes);
	}