code: public ServiceFuture<PolicyDefinitionInner> createOrUpdateAsync(String policyDefinitionName, PolicyDefinitionInner parameters, final ServiceCallback<PolicyDefinitionInner> serviceCallback) {
          return ServiceFuture.fromResponse(createOrUpdateWithServiceResponseAsync(policyDefinitionName, parameters), serviceCallback);
      }
docs: Creates or updates a policy definition.
  
  @param policyDefinitionName The name of the policy definition to create.
  @param parameters The policy definition properties.
  @param serviceCallback the async ServiceCallback to handle successful and failed responses.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the {@link ServiceFuture} object