src/main/java/com/microsoft/store/partnercenter/subscriptions/SubscriptionAddOnCollectionOperations.java [31:45]:
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	public SubscriptionAddOnCollectionOperations(IPartner rootPartnerOperations, String customerId,
												  String subscriptionId)
	{
		super(rootPartnerOperations, new Tuple<String, String>(customerId, subscriptionId));
		if (StringHelper.isNullOrWhiteSpace(customerId))
		{
			throw new IllegalArgumentException("customerId should be set.");
		}

		if (StringHelper.isNullOrWhiteSpace(subscriptionId))
		{
			throw new IllegalArgumentException("subscriptionId should be set.");
		}

	}
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src/main/java/com/microsoft/store/partnercenter/subscriptions/SubscriptionUpgradeCollectionOperations.java [32:46]:
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	public SubscriptionUpgradeCollectionOperations(IPartner rootPartnerOperations, String customerId,
													String subscriptionId)
	{
		super(rootPartnerOperations, new Tuple<String, String>(customerId, subscriptionId));
		if (StringHelper.isNullOrWhiteSpace(customerId))
		{
			throw new IllegalArgumentException("customerId should be set.");
		}

		if (StringHelper.isNullOrWhiteSpace(subscriptionId))
		{
			throw new IllegalArgumentException("subscriptionId should be set.");
		}

	}
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src/main/java/com/microsoft/store/partnercenter/usage/ResourceUsageRecordCollectionOperations.java [31:46]:
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	public ResourceUsageRecordCollectionOperations(IPartner rootPartnerOperations, String customerId,
													String subscriptionId)
	{
		super(rootPartnerOperations, new Tuple<String, String>(customerId, subscriptionId));

		if (StringHelper.isNullOrWhiteSpace(customerId))
		{
			throw new IllegalArgumentException("customerId should be set.");
		}

		if (StringHelper.isNullOrWhiteSpace(subscriptionId))
		{
			throw new IllegalArgumentException("subscriptionId should be set.");
		}

	}
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src/main/java/com/microsoft/store/partnercenter/usage/SubscriptionUsageSummaryOperations.java [30:44]:
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	public SubscriptionUsageSummaryOperations(IPartner rootPartnerOperations, String customerId,
											   String subscriptionId)
	{
		super(rootPartnerOperations, new Tuple<String, String>(customerId, subscriptionId));

		if (StringHelper.isNullOrWhiteSpace(customerId))
		{
			throw new IllegalArgumentException("customerId must be set.");
		}

		if (StringHelper.isNullOrWhiteSpace(subscriptionId))
		{
			throw new IllegalArgumentException("subscriptionId must be set.");
		}
	}
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