src/vs/platform/policy/common/policyIpc.ts/PolicyChannelClient/_updatePolicyDefinitions
class PolicyChannelClient:	protected async _updatePolicyDefinitions(policyDefinitions: IStringDictionary<PolicyDefinition>): Promise<void> {
		const result = await this.channel.call<{ [name: PolicyName]: PolicyValue }>('updatePolicyDefinitions', policyDefinitions);
		for (const name in result) {
			this.policies.set(name, result[name]);
		}
	}