Description:
  Generate Swagger API definitions for LoopBack applications.

Example:

  slc loopback:export-api-def [--json]

  This will output the api definitions to stdout.
  Use option --json to display in JSON format, otherwise it defaults to YAML.

  slc loopback:export-api-def [--o outputFile]

  This will output the api definitions to the specified location. Based on the
  file extension, it will print to yaml or json format.
