public void setSource(String source) {
        this.source = source;
    }

    @Override
    public void add(Problem.Severity severity, String message, int line, int column, Exception cause) {
        Problem problem = new DefaultProblem(message, severity, source, line, column, cause);

        problems.add(problem);
    }

     * returns -1 if none is available.
     * @return the current line number
     */
    int getLineNumber();

    /**
     * Return the column number where the current event ends,
     * returns -1 if none is available.
     * @return the current column number
     */
    int getColumnNumber();

    /**
     * Return the byte or character offset into the input source this location

     * @param lineNumber The one-based index of the line containing the problem or {@code -1} if unknown.
     * @param columnNumber The one-based index of the column containing the problem or {@code -1} if unknown.
     * @param exception The exception that caused this problem, may be {@code null}.
     */
    DefaultProblem(

            source = getSource();
        }

        if (line <= 0 && column <= 0 && exception instanceof ModelParserException e) {
            line = e.getLineNumber();
            column = e.getColumnNumber();
        }

        ModelProblem problem =
                new DefaultModelProblem(message, severity, version, source, line, column, modelId, exception);

        add(problem);
    }

            buffer.append("line ").append(getLineNumber());
        }
        if (getColumnNumber() > 0) {
            if (!buffer.isEmpty()) {
                buffer.append(", ");
            }
            buffer.append("column ").append(getColumnNumber());
        }
        return buffer.toString();
    }

    @Override
    public String toString() {
        StringBuilder buffer = new StringBuilder(128);

                                problem.getLineNumber() > 0 ? "line " + problem.getLineNumber() : "",
                                problem.getColumnNumber() > 0 ? "column " + problem.getColumnNumber() : "")
                        .filter(s -> !s.isEmpty())
                        .collect(Collectors.joining(", "));
                if (!loc.isEmpty()) {

    /**
     * Creates a string with all location details for the specified model problem. If the project identifier is
     * provided, the generated location will omit the model id and source information and only give line/column
     * information for problems originating directly from this POM.
     *
     * @param problem The problem whose location should be formatted, must not be {@code null}.

    private static class SimpleProblemCollector implements SettingsProblemCollector {

        public List<String> messages = new ArrayList<>();

        public void add(Severity severity, String message, int line, int column, Exception cause) {
            messages.add(message);
        }
    }

     */

     * @param source The source of the problem, may be {@code null}.
     * @param lineNumber The one-based index of the line containing the error or {@code -1} if unknown.
     * @param columnNumber The one-based index of the column containing the error or {@code -1} if unknown.
     * @param exception The exception that caused this problem, may be {@code null}.
     */
    // mkleint: does this need to be public?
    public DefaultModelProblem(

                    "includesDependencies",
                    ""
                };

                int i = 0;
                for (String col : cols) {
                    assertEquals(expected[i++], col.trim(), "Wrong column header");
                }
            } else if (line.startsWith("|")) {
                String[] cols = line.split("\\|");

                String type = trimApt(cols[1]);