public RegisterValue getOriginalPrototypeContext(Register baseContextReg) {
		try {
			return codeMgr.getOriginalPrototypeContext(proto, baseContextReg);
		}
		catch (NoValueException e) {
			Msg.error(this, "Unexpected Error", e);
		}
		return null;
	}
Get the original context used to establish the shared prototype
@param baseContextReg is a context register
@return prototype context value
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/database/code/InstructionDB.java