} catch (XMLStreamException e) {
            throw new SettingsParseException(
                    e.getMessage(),
                    e.getLocation().getLineNumber(),
                    e.getLocation().getColumnNumber(),
                    e);
        }
    }

    @Override
    public Settings read(Reader input, Map<String, ?> options) throws IOException {
        Objects.requireNonNull(input, "input cannot be null");

        } catch (XMLStreamException e) {
            throw new MetadataParseException(
                    e.getMessage(),
                    e.getLocation().getLineNumber(),
                    e.getLocation().getColumnNumber(),
                    e);
        }
    }

    @Override
    public Metadata read(InputStream input, Map<String, ?> options) throws IOException {
        Objects.requireNonNull(input, "input cannot be null");

                    }
                    if (problem.getColumnNumber() > 0) {
                        if (!location.isEmpty()) {
                            location += ", ";
                        }
                        location += "column " + problem.getColumnNumber();
                    }

                    if (!location.isEmpty()) {

        } catch (XMLStreamException e) {
            throw new ToolchainsParseException(
                    e.getMessage(),
                    e.getLocation().getLineNumber(),
                    e.getLocation().getColumnNumber(),
                    e);
        }
    }

    @Override
    public PersistedToolchains read(Reader input, Map<String, ?> options) throws IOException {

                buffer.append(", ");
            }
            buffer.append("line ").append(getLineNumber());
        }

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

        return buffer.toString();
    }

    @Override
    public Exception getException() {

                buffer.append(", ");
            }
            buffer.append("line ").append(getLineNumber());
        }

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

        return buffer.toString();
    }

    @Override
    public Exception getException() {

    /**
     * Get the one-based column number. The value will be
     * non-positive if unknown.
     *
     * @return int
     */
    public int getColumnNumber() {
        return this.columnNumber;
    } // -- int getColumnNumber()

    /**
     * Get the one-based line number. The value will be
     * non-positive if unknown.
     *
     * @return int
     */

                            return problem.getLineNumber();
                        }

                        @Override
                        public int getColumnNumber() {
                            return problem.getColumnNumber();
                        }

                        @Override
                        public String getLocation() {

        boolean hasLocation = actual.getProblems().stream()
                .anyMatch(p -> p.getLineNumber() == lineNumber && p.getColumnNumber() == columnNumber);

        if (!hasLocation) {
            String actualLocations = actual.getProblems().stream()
                    .map(p -> formatLocation(p.getColumnNumber(), p.getLineNumber()))
                    .collect(joining(", "));
            String message = String.format(

            }
            buffer.append("line ").append(problem.getLineNumber());
        }

        if (problem.getColumnNumber() > 0) {
            if (!buffer.isEmpty()) {
                buffer.append(", ");
            }
            buffer.append("column ").append(problem.getColumnNumber());
        }

        return buffer.toString();
    }