Registry tool: problem setting token-source

[timburks]

registry config set token-source 'echo mytoken'
Error: unknown property: "token-source".
Usage:
  registry config set PROPERTY VALUE [flags]

Examples:
registry config set registry.address localhost:8080
registry config set token-source 'gcloud auth print-access-token [email protected]'

Flags:
  -h, --help   help for set

Global Flags:
      --address string             the server and port of the Registry API (eg. localhost:8080)
  -c, --config string              name of a configuration profile or path to config file
      --registry.address string    the server and port of the Registry API (eg. localhost:8080)
      --registry.insecure          if specified, client connects via http (not https)
      --registry.location string   the API Registry location
      --registry.project string    the API Registry project
      --registry.token string      the token to use for authorization to the API Registry

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Need more help?
https://github.com/apigee/registry/wiki