### Relationship between the CLI and controller

The CLI and controller share the same API and codebase for generating manifests from the API. You can think of the
controller as the CLI command `istioctl install` running in a loop in a pod in the cluster and using the config
from the in-cluster IstioOperator custom resource (CR).
There are two major differences:

  // 	  "true", "false", "null", "in", "as", "break", "const", "continue", "else", "for", "function", "if",
  // 	  "import", "let", "loop", "package", "namespace", "return".
  // Examples:
  //   - Expression accessing a property named "namespace": {"Expression": "object.__namespace__ > 0"}