String value = it.next();
                    String inter = interpolate(value);
                    if (value != inter) {
                        it.set(inter);
                    }
                }
            }
        }

        private String interpolate(String value) {
            return interpolator.interpolate(value);
        }
    }

    /**
     * @deprecated Use {@link ModelInterpolator#interpolate(Model, File, ProjectBuilderConfiguration, boolean)} instead.
     */
    @Deprecated
    Model interpolate(Model project, Map<String, ?> context) throws ModelInterpolationException;

    /**
     * @deprecated Use {@link ModelInterpolator#interpolate(Model, File, ProjectBuilderConfiguration, boolean)} instead.
     */
    @Deprecated

            for (ValueSource vs : valueSources) {
                interpolator.addValueSource(vs);
            }

            for (InterpolationPostProcessor postProcessor : postProcessors) {
                interpolator.addPostProcessor(postProcessor);
            }

            try {
                try {
                    result = interpolator.interpolate(result, recursionInterceptor);

     *
     * @param properties The map containing key-value pairs to be interpolated.
     * @param callback The function to resolve variable values not found in the map.
     */
    default void interpolate(@Nonnull Map<String, String> properties, @Nullable UnaryOperator<String> callback) {
        interpolate(properties, callback, null, true);
    }

    /**
     * Interpolates the values in the given map using the provided callback function.
     *

                    if (String.class == value.getClass()) {
                        String interpolated = ctx.interpolate((String) value);

                        if (interpolated != null && !interpolated.equals(value)) {
                            try {
                                entry.setValue(interpolated);
                            } catch (UnsupportedOperationException ignore) {

        RegexBasedInterpolator interpolator = new RegexBasedInterpolator();

        interpolator.addValueSource(new PropertiesBasedValueSource(request.getUserProperties()));

        interpolator.addValueSource(new PropertiesBasedValueSource(request.getSystemProperties()));

        try {
            interpolator.addValueSource(new EnvarBasedValueSource());
        } catch (IOException e) {

        } finally {
            getInterpolator().clearAnswers();
        }
    }

    @Override
    protected Interpolator createInterpolator() {
        StringSearchInterpolator interpolator = new StringSearchInterpolator();
        interpolator.setCacheAnswers(true);

        return interpolator;
    }

    private static final class InterpolateObjectAction implements PrivilegedAction<ModelInterpolationException> {

                }
                return null;
            }
        });

        try {
            serializedToolchains = interpolator.interpolate(serializedToolchains);
        } catch (InterpolationException e) {
            problems.add(Problem.Severity.ERROR, "Failed to interpolate toolchains: " + e.getMessage(), -1, -1, e);
            return toolchains;
        }

        PersistedToolchains result;
        try {

            }
            printWriter.accept(sb.toString());
        }
    }

    @Override
    public final Options interpolate(UnaryOperator<String> callback) {
        try {
            // now that we have properties, interpolate all arguments
            Interpolator interpolator = createInterpolator();
            CommandLine.Builder commandLineBuilder = CommandLine.builder();

                Interpolation nt = new Interpolation(pa, interpolator::interpolate);
                nt.performFor(pa.getName(), "name", pa::setName);
                nt.performFor(pa.getValue(), "value", pa::setValue);
            });
            a.map(Activation::getJdk).ifPresent(ja -> new Interpolation(activation, interpolator::interpolate)
                    .performFor(ja, "jdk", activation::setJdk));
        }