public String getFileName() {
		if (mappedInfo != null) {
			return mappedInfo.getFileName();
		}
		if (fileBytes != null) {
			return fileBytes.getFilename();
		}
		return null;
	}
Returns the filename of the originally imported file that provided the byte value for the
associated address or null if there is no source information for this location.
@return the filename of the originally imported file that provided the byte value for the
associated address or null if there is no source information for this location.
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/database/mem/AddressSourceInfo.java