Replace throws ambiguous exception on replace when self link is null

**Describe the bug**
Replace throws ambiguous exception on replace when self link is null.

**To Reproduce**
1. Create a trigger without a self link
2. Call client.ReplaceTrigger(updateTrigger);

**Expected behavior**
java.lang.IllegalArgumentException: The self link property is required for replace operations.

**Actual behavior**
java.lang.IllegalArgumentException: Entity with the specified id does not exist in the system.