To place any child of objB at the same physical location as objA, it needs to have
its object position set to p. As an aside, it is interesting to understand how the
MDagPath works internally. Each particular instance of an object has a unique
DAG path. Each instance has a unique index. This is retrieved using the
i nstanceNumber function. Although it may appear that the worldMatrix is a single
matrix attribute, it is in fact an array of matrices. There are as many array elements
as there are instances. To retrieve the matrix for a given instance, the
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