private boolean isAlternatePlaced() {
		HighFunction highFunction = context.getHighFunction();	// Get the updated HighFunction
		if (highFunction == null) {
			return false;
		}
		// Varnode itself should be unchanged
		Varnode vn = DynamicHash.findVarnode(highFunction, convertAddress, convertHash);
		if (vn == null) {
			return false;
		}
		HighSymbol symbol = vn.getHigh().getSymbol();	// But now it should have an equate on it
		if (!(symbol instanceof EquateSymbol)) {
			return false;
		}
		EquateSymbol eqSymbol = (EquateSymbol) symbol;
		if (!eqSymbol.getPCAddress().equals(altAddress)) {
			return false;
		}
		return true;
	}
Look for the EquateSymbol pointing to the altAddress, attached to the constant
@return true if we find the EquateSymbol, false otherwise
Ghidra/Features/Decompiler/src/main/java/ghidra/app/plugin/core/decompile/actions/ConvertConstantTask.java