problemsList.add(modelProblem);
            }

            if (result.hasErrors()) {
                hasErrors = true;
            }
        }
        return new Result<>(hasErrors, (Iterable<T>) modelsList, problemsList);
    }

    // helper to determine if problems contain error
    private static boolean hasErrors(Iterable<? extends ModelProblem> problems) {
        for (ModelProblem input : problems) {

            null
        } else {
            var hasErrors = false
            if (lhsResolution.property.isReadOnly) {
                errorCollector.collect(ResolutionError(assignment, ErrorReason.ReadOnlyPropertyAssignment(lhsResolution.property)))
                hasErrors = true
            }
            val rhsResolution = expressionResolver.doResolveExpression(this, assignment.rhs)

			}

			if test.status.AsError() == test.expectedAsError {
				return
			}

			if test.status.AsError().Error() != test.expectedAsError.Error() {
				t.Errorf("expect status.AsError() returns %v, but %v", test.expectedAsError, test.status.AsError())
			}
		})
	}
}

func TestPreFilterResultMerge(t *testing.T) {

        PersistedToolchains effective = toolchainsMerger.merge(user, global, false, null);

        if (hasErrors(problems)) {
            throw new ToolchainsBuilderException("Error building toolchains", problems);
        }

        return new DefaultToolchainsBuilderResult(effective, problems);
    }

    private boolean hasErrors(List<BuilderProblem> problems) {
        if (problems != null) {

        } finally {
            parentDisposable.dispose()
        }
    }

    private
    object TestMessageCollector : MessageCollector {
        override fun clear() = Unit
        override fun hasErrors(): Boolean = false
        override fun report(severity: CompilerMessageSeverity, message: String, location: CompilerMessageSourceLocation?) {
            println("$severity: $message")
        }
    }

public interface ModelProblemCollector {

    /**
     * The collected problems.
     * @return a list of model problems encountered, never {@code null}
     */
    List<ModelProblem> getProblems();

    boolean hasErrors();

    boolean hasFatalErrors();

    default void add(BuilderProblem.Severity severity, ModelProblem.Version version, String message) {
        add(severity, version, message, null, null);
    }

			if err != nil {
				t.Fatal(err)
			}
			binder := &DefaultBinder{handle: fh}
			status := binder.Bind(ctx, nil, testPod, testNode)
			if got := status.AsError(); (tt.injectErr != nil) != (got != nil) {
				t.Errorf("got error %q, want %q", got, tt.injectErr)
			}
			if diff := cmp.Diff(tt.wantBinding, gotBinding); diff != "" {

            severities.add(problem.getSeverity());
        }
    }

    public boolean hasFatalErrors() {
        return severities.contains(ModelProblem.Severity.FATAL);
    }

    public boolean hasErrors() {
        return severities.contains(ModelProblem.Severity.ERROR) || severities.contains(ModelProblem.Severity.FATAL);
    }

    @Override
    public List<ModelProblem> getProblems() {
        return problems;

            severities.add(problem.getSeverity());
        }
    }

    public boolean hasFatalErrors() {
        return severities.contains(ModelProblem.Severity.FATAL);
    }

    public boolean hasErrors() {
        return severities.contains(ModelProblem.Severity.ERROR) || severities.contains(ModelProblem.Severity.FATAL);
    }

    @Override
    public List<ModelProblem> getProblems() {
        return problems;