docs: public GetReservedInstancesExchangeQuoteRequest withTargetConfigurations(TargetConfigurationRequest... targetConfigurations) {
          if (this.targetConfigurations == null) {
              setTargetConfigurations(new com.amazonaws.internal.SdkInternalList<TargetConfigurationRequest>(targetConfigurations.length));
          }
          for (TargetConfigurationRequest ele : targetConfigurations) {
              this.targetConfigurations.add(ele);
          }
          return this;
      }