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 String toString() {

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

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

        return buffer.toString();
    }

    public Exception getException() {
        return exception;

        }

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

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

        @Override
        public String getLocation() {
            return problem.getLocation();
        }

        @Override

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

                problems.add(new DefaultBuilderProblem(
                        toolchainsSource.getLocation(),
                        loc != null ? loc.getLineNumber() : -1,
                        loc != null ? loc.getColumnNumber() : -1,
                        e,
                        e.getMessage(),
                        BuilderProblem.Severity.WARNING));
            }
        } catch (XmlReaderException e) {

                            settingsSource.getLocation(),
                            loc != null ? loc.getLineNumber() : -1,
                            loc != null ? loc.getColumnNumber() : -1,
                            e,
                            e.getMessage(),
                            BuilderProblem.Severity.WARNING));
                }
            }

                            return problem.getLineNumber();
                        }

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

                        @Override
                        public String getLocation() {

     */
    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
     * is pointing to. If the input source is a file or a byte stream then

        this.location = location;
    }

    @Override
    public int getLineNumber() {
        return location.getLineNumber();
    }

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

    @Override
    public int getCharacterOffset() {
        return location.getCharacterOffset();
    }

    @Override
    public String getPublicId() {

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

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