}

data class JsonBasedGradleSubprojectProvider(
    private val jsonFile: File,
) : GradleSubprojectProvider {
    private val objectMapper = ObjectMapper().registerKotlinModule()

    override val subprojects = objectMapper.readValue<List<Map<String, Any>>>(jsonFile.readText()).map { toSubproject(it) }

    private val nameToSubproject = subprojects.map { it.name to it }.toMap()

    private val buckets: Map<TestCoverage, List<SmallSubprojectBucket>> = buildBuckets(testTimeDataJson, model)

    fun generate(jsonFile: File) {
        val output =
            buckets.map {
                TestCoverageAndBucketSplits(it.key.uuid, it.value.map { it.toJsonBucket() })
            }
        jsonFile.writeText(gson.toJson(output))
    }

    private fun buildBuckets(
        buildClassTimeJson: File,

  integrity sha512-xbbCH5dCYU5T8LcEhhuh7HJ88HXuW3qsI3Y0zOZFKfZEHcpWiHU/Jxzk629Brsab/mMiHQti9wMP+845RPe3Vg==

jsonfile@^4.0.0:
  version "4.0.0"
  resolved "https://registry.yarnpkg.com/jsonfile/-/jsonfile-4.0.0.tgz#8771aae0799b64076b76640fca058f9c10e33ecb"
  integrity sha512-m6F1R3z8jjlf2imQHS2Qez5sjKWQzbuuhuJ/FKYFRZvPE3PuHcSMVZzfsLhGVOkfd20obL5SWEBew5ShlquNxg==
  optionalDependencies:

            }
            final File jspFile = new File(getServletContext().getRealPath(path));
            if (!jspFile.exists()) {
                throwValidationError(messages -> messages.addErrorsDesignJspFileDoesNotExist(GLOBAL), this::asListHtml);
            }
            return jspFile;
        } catch (final UnsupportedEncodingException e) {

This gives you a lot of flexibility. You can return any data type, override any data declaration or validation, etc.

## Using the `jsonable_encoder` in a `Response` { #using-the-jsonable-encoder-in-a-response }

Because **FastAPI** doesn't make any changes to a `Response` you return, you have to make sure its contents are ready for it.

For example, if you need to store it in a database.

For that, **FastAPI** provides a `jsonable_encoder()` function.

## Using the `jsonable_encoder` { #using-the-jsonable-encoder }

Let's imagine that you have a database `fake_db` that only receives JSON compatible data.

For example, it doesn't receive `datetime` objects, as those are not compatible with JSON.

                    designJspFileNameMap.entrySet().stream().forEach(e -> {
                        final File jspFile = getDesignJspFile("/WEB-INF/view" + key + "/" + e.getValue());
                        if (!jspFile.exists()) {
                            jspFile.getParentFile().mkdirs();
                            final File baseJspFile = getDesignJspFile("/WEB-INF/view/" + e.getValue());

            return null;
        }

        @Override
        public jakarta.servlet.ServletRegistration.Dynamic addJspFile(String servletName, String jspFile) {
            return null;
        }

        @Override
        public <T extends jakarta.servlet.Servlet> T createServlet(Class<T> clazz) {
            return null;
        }

        @Override

            return null;
        }

        @Override
        public jakarta.servlet.ServletRegistration.Dynamic addJspFile(String servletName, String jspFile) {
            return null;
        }

        @Override
        public <T extends jakarta.servlet.Servlet> T createServlet(Class<T> clazz) {
            return null;
        }

        @Override

            return null;
        }

        @Override
        public jakarta.servlet.ServletRegistration.Dynamic addJspFile(String servletName, String jspFile) {
            return null;
        }

        @Override
        public <T extends jakarta.servlet.Servlet> T createServlet(Class<T> clazz) {
            return null;
        }

        @Override