[0.5.0-Dev] Avro Schema generation for fields with identical ChoiceTypes fails

[bdrillard]

Description of Issue

Avro Schema generation fails with fields that have identical ChoiceType structures for a given Resource, e.g. Medication.ingredient.item[x] and Medication.package.content.item[x].

This causes a Schema redefinition error.

Expected Outcomes

It should be possible to generate Avro Schemas for Generic Records and SpecificRecords for Resources that have fields with identical ChoiceType structures.

These GenericRecords/SpecificRecords should be de/serializable to/from FHIR objects and Spark Rows and Avro objects.

[bdrillard]

Fix merged into 0.5.0-dev feature branch by #59. Closing this issue.