src/vs/workbench/services/extensions/common/rpcProtocol.ts/RPCProtocol/_setResponsiveState
class RPCProtocol:	private _setResponsiveState(newResponsiveState: ResponsiveState): void {
		if (this._responsiveState === newResponsiveState) {
			// no change
			return;
		}
		this._responsiveState = newResponsiveState;
		this._onDidChangeResponsiveState.fire(this._responsiveState);
	}