The parent of a component is set as a result of registering the parent component. When a component that has children is registered, all of the child components are updated to reflect the newly registered component as their parent. This update only occurs if the child component does not already
have a parent component set.
The specified parent component is reduced to a lightweight component reference that uniquely identifies the parent in the product install registry. This lightweight reference includes the parent's uuid and instance number.
The parent must be registered before a call to wsreg_set_parent() can be made, since the parent's instance number must be known at the time the wsreg_set_parent() function is called.
A process needing to call wsreg_set_parent() or wsreg_get_parent() must have read access to the product install registry.
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