protected void assertObjectNotNull(String variableName, Object value) {
        if (variableName == null) {
            String msg = "The value should not be null: variableName=null value=" + value;
            throw new IllegalArgumentException(msg);
        }
        if (value == null) {
            String msg = "The value should not be null: variableName=" + variableName;
            throw new IllegalArgumentException(msg);
        }

            try {
                final String resourceName = params == null ? null : params.get(ExtractData.RESOURCE_NAME_KEY);
                final String contentType = params == null ? null : params.get(ExtractData.CONTENT_TYPE);
                String contentEncoding = params == null ? null : params.get(ExtractData.CONTENT_ENCODING);
                final boolean normalizeText = params == null ? true : !Constants.FALSE.equalsIgnoreCase(params.get(NORMALIZE_TEXT));

        if (repositories != null && mirrors != null) {
            for (ArtifactRepository repository : repositories) {
                Mirror mirror = MavenRepositorySystem.getMirror(repository, mirrors);
                injectMirror(repository, mirror);
            }
        }
    }

    private void injectMirror(ArtifactRepository repository, Mirror mirror) {
        if (mirror != null) {

        // TODO Auto-generated method stub
        return null;
    }

    @Override
    public DataSource assistDataSource() {
        // TODO Auto-generated method stub
        return null;
    }

    @Override
    public DBMetaProvider assistDBMetaProvider() {
        // TODO Auto-generated method stub
        return null;
    }

    @Override

     * @param scopesToResolve The dependency scopes that should be resolved, may be {@code null}.
     * @param session         The current build session, must not be {@code null}.
     * @return The transitive dependencies of the specified project that match the requested scopes, never {@code null}.
     * @throws ArtifactResolutionException in case of resolution issue

        return createArtifact(groupId, artifactId, version, scope, type, null, null);
    }

    public Artifact createArtifactWithClassifier(
            String groupId, String artifactId, String version, String type, String classifier) {
        return createArtifact(groupId, artifactId, version, null, type, classifier, null);
    }

    public Artifact createDependencyArtifact(
            String groupId,

        if (reporting != null) {
            reporting.setOutputDirectory(alignToBaseDirectory(reporting.getOutputDirectory(), basedir));
        }
    }

    public String alignToBaseDirectory(String path, File basedir) {
        if (basedir == null) {
            return path;
        }

        if (path == null) {
            return null;
        }

        String s = stripBasedirToken(path);

                            : null );
                    if ( cresp != null && cresp.isReceived() ) {
                        return (T) cresp;
                    }
                    if ( chain != null ) {
                        return this.transport.send(chain, null, params);
                    }
                    return null;

        return "Type2Message[target=" + target +
            ",challenge=" + (challenge == null ? "null" : "<" + challenge.length + " bytes>") +
            ",context=" + (context == null ? "null" : "<" + context.length + " bytes>") +
            ",targetInformation=" + (targetInformation == null ? "null" : "<" + targetInformation.length + " bytes>") +

        if (businessCategory != null) {
            addFieldToSource(sourceMap, "businessCategory", businessCategory);
        }
        if (carLicense != null) {
            addFieldToSource(sourceMap, "carLicense", carLicense);
        }
        if (city != null) {
            addFieldToSource(sourceMap, "city", city);
        }
        if (departmentNumber != null) {