Get more information about how to use a given entrypoint

Example response

{
  "description": "Let your consumers send synchronous, on-demand requests for events via a standard HTTP GET requests. Use a standard HTTP proxy to mediate between client applications as data consumers and event brokers such as Kafka.",
  "documentationUrl": "https://documentation.gravitee.io",
  "schemaImg": "data:image/png;base64,aFDqfda"
}