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.