Source src = mock(Source.class);
        IOException ioException = new IOException("MESSAGE");
        doThrow(ioException).when(src).getInputStream();
        doReturn("LOCATION").when(src).getLocation();

        ToolchainsBuildingRequest request = new DefaultToolchainsBuildingRequest();
        request.setGlobalToolchainsSource(src);

        try {
            toolchainBuilder.build(request);

        for (CoreExtension coreExtension : coreExtensions) {
            String ga = coreExtension.getGroupId() + ":" + coreExtension.getArtifactId();
            InputLocation location = coreExtension.getLocation("");
            gasLocations.computeIfAbsent(ga, k -> new ArrayList<>()).add(location);
            // TODO: metaversions could be extensible enum with these two values out of the box

                for (BuilderProblem problem :
                        toolchainsResult.getProblems().problems().toList()) {
                    context.logger.warn(problem.getMessage() + " @ " + problem.getLocation());
                }
            }

            context.logger.info("");
        }
    }

    @Override

        </field>
      </fields>
      <codeSegments>
        <codeSegment>
          <version>2.0.0+</version>
          <code>
    @Override
    public String toString() {
        return getLocation();
    }
          </code>
        </codeSegment>
      </codeSegments>
    </class>
  </classes>

                for (BuilderProblem problem :
                        settingsResult.getProblems().problems().toList()) {
                    context.logger.warn(problem.getMessage() + " @ " + problem.getLocation());
                }
            }
            context.logger.info("");
        }
        return () -> {
            context.installationSettingsPath = null;
            context.projectSettingsPath = null;

rebuildIndentationBu(); protected void writeIndent() throws java.io.IOException; public void setProperty(String, Object) throws IllegalArgumentExcep, IllegalStateExceptio; public Object getProperty(String) throws IllegalArgumentExcep; private String getLocation(); public java.io.Writer getWriter(); public void setOutput(java.io.Writer); public void setOutput(java.io.OutputStream, String) throws java.io.IOException; public void startDocument(String, Boolean) throws java.io.IOException; public void endDocument()...

      <codeSegments>
        <codeSegment>
          <version>4.0.0+</version>
          <code>
            <![CDATA[
    @Override
    public String toString() {
        return getModelId() + " " + getLocation();
    }
            ]]>
          </code>
        </codeSegment>
      </codeSegments>
    </class>
  </classes>