Error: requires at least 1 arg(s), only received 0
Usage:
  plugin CONFIG [ARGS] [flags]

Examples:

# Perform a replacement on a deployment. Prior to running this command,
# the file '/tmp/replacement.yaml' should be created as follows:
---
apiVersion: airshipit.org/v1alpha1
kind: ReplacementTransformer
metadata:
  name: notImportantHere
replacements:
- source:
    value: nginx:newtag
  target:
    objref:
      kind: Deployment
    fieldrefs:
    - spec.template.spec.containers[name=nginx-latest].image

# The replacement can then be performed. Output defaults to stdout.
airshipctl document plugin /tmp/replacement.yaml


Flags:
  -h, --help   help for plugin