Commits on Aug 11, 2024

1. Add optional argument for making clone of predefined resources …

   The FHIRDefinitions class provides a public method to return all
   predefined resources. Hypothetically, the caller of this method could
   alter the predefined resources, which is why it could be useful to
   return a clone of these resources. However, in all places this method is
   called by SUSHI, the resources are used for a search, not for any
   modifications. By not cloning the resources for the search, significant
   time savings are possible. Just in case someone else is using SUSHI as a
   dependency and calling this method and expecting to receive a clone, the
   default behavior is to return a clone.
   
   When searching for slices, the slice of an element is always a sibling
   of that element. Therefore, it is preferable to search the smaller list
   containing only the element's parent's children, when possible. This
   takes advantage of the underlying ElementDefinition tree. Because the
   root element's parent is undefined, use the full element list when
   working with the root element. This shouldn't be possible in most cases,
   as revealed by the test coverage, but the implementation is defensive
   just in case something unusual has happened to the root element.

   

   mint-thompson committed Aug 11, 2024
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