private Reference getFallThroughReference(Program program, Address fromAddress,
			int operandIndex) {
		Reference[] otherRefs =
			program.getReferenceManager().getReferencesFrom(fromAddress, operandIndex);
		for (Reference reference : otherRefs) {
			if (reference.getReferenceType().isFallthrough()) {
				return reference;
			}
		}
		return null;
	}
@param program
@param fromAddress
@param operandIndex
@return
Ghidra/Features/Base/src/main/java/ghidra/app/merge/listing/ReferenceMerger.java