@Override
	public int getConflictCount(Address addr) {
		// Not Used. ExternalFunctionMerger gets called directly instead of by default methods.
		return 0;
	}
Removes the indicated external from the result program.
@param sourceProgram the program that is the source of the external location
(Either Latest, My, or Original program.)
@param sourceExternalLocation the external location that indicates which external
is to be removed from the result. (External is from Latest, My, or Original program.)
Ghidra/Features/Base/src/main/java/ghidra/app/merge/listing/ExternalFunctionMerger.java