public Map<String, List<PartitionSpecialCase>> getPartitionSpecialCases() {
        return partitionSpecialCases;
    }
Gets the map of partition string to a list of partition special cases defined in the trait.

@return Returns a map of partition string to a list of {@link PartitionSpecialCase}
smithy-aws-endpoints/src/main/java/software/amazon/smithy/rulesengine/aws/traits/StandardRegionalEndpointsTrait.java