String getSourceFileName(AbstractMsType type) {
		if (type instanceof UserDefinedTypeSourceAndLineMsType udtSLType) {
			return udtSLType.getSourceFileName();
		}
		else if (type instanceof UserDefinedTypeModuleSourceAndLineMsType udtMSLType) {
			return udtMSLType.getSourceFileName();
		}
		return null;
	}
Returns the source file name
@param type the PDB type being inspected
@return the source file name or null if problem recovering name
Ghidra/Features/PDB/src/main/java/ghidra/app/util/pdb/pdbapplicator/UdtSourceLineTypeApplier.java