public int getConflictCount() {
		return extPgms.size();
	}
Actually merges the indicated program name from the program version indicated
by conflictOption into the result program.
@param idGroup the symbol ID group for the external program (Library) to merge.
@param chosenConflictOption conflict option indicating the program version the user chose.
@param monitor the task monitor for feedback and canceling.
@throws CancelledException if the user cancels the merge.
Ghidra/Features/Base/src/main/java/ghidra/app/merge/listing/ExternalProgramMerger.java