problems.add(new DefaultBuilderProblem(
                    toolchainsSource.getLocation(),
                    -1,
                    -1,
                    e,
                    "Non-readable toolchains " + toolchainsSource.getLocation() + ": " + e.getMessage(),
                    BuilderProblem.Severity.FATAL));
            return PersistedToolchains.newInstance();
        }

                }
            }
            problems.add(
                    Severity.FATAL,
                    ModelProblem.Version.BASE,
                    "Non-readable POM " + modelSource.getLocation() + ": " + msg,
                    e);
            throw problems.newModelBuilderException();
        }

        if (modelSource.getPath() != null) {

     * @return the problems that were encountered during the project building, can be empty but never {@code null}
     */
    @Nonnull
    List<ModelProblem> getProblems();

    /**
     * Creates a human readable representation of these errors.
     */
    String toString();

            problems.add(new DefaultBuilderProblem(
                    settingsSource.getLocation(),
                    -1,
                    -1,
                    e,
                    "Non-readable settings " + settingsSource.getLocation() + ": " + e.getMessage(),
                    BuilderProblem.Severity.FATAL));
            return Settings.newInstance();
        }