@Override
    public PrintStream append(CharSequence csq, int start, int end) {
        getStream().append(csq, start, end);
        return this;
    }

    @Override
    public boolean checkError() {
        return getStream().checkError();
    }

    @Override
    public void close() {
        PrintStream currentStream = maybeGetStream();
        if (currentStream != null) {
            stream.remove();

		if len(stmts) < 2 {
			// The call to the http function is the last statement of the block.
			return true
		}

		// Skip cases in which the call is wrapped by another (#52661).
		// Example:  resp, err := checkError(http.Get(url))
		if ncalls > 1 {
			return true
		}

		asg, ok := stmts[0].(*ast.AssignStmt)
		if !ok {
			return true // the first statement is not assignment.
		}

		resp := rootIdent(asg.Lhs[0])