You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: rego.go
    path of file: ./repos/tracee/pkg/cmd/flags
    
    the code of the file until where you have to start completion: package flags

import (
	"strings"

	"github.com/open-policy-agent/opa/compile"

	"github.com/aquasecurity/tracee/pkg/errfmt"
	"github.com/aquasecurity/tracee/pkg/signatures/rego"
)

func regoHelp() string {
	return `Rego configurations.
possible options:
partial-eval        
    
func regoHelp() string {
	return `Rego configurations.
possible options:
partial-eval            enable partial evaluation of rego signatures.
aio                     compile rego signatures altogether as an aggregate policy. By default each signature is compiled separately.
Examples:
  --rego partial-eval                               | enable partial evaluation
  --rego partial-eval --rego aio                    | enable partial evaluation, and aggregate policy compilation.
Use this flag multiple times to choose multiple output options
`
}